Did you know?

The formula for the area of a trapezoid is (base 1 + base 2) / 2 x height, as seen in the figure below: The calculation essentially relies on the fact a trapezoid's area can be equated to that of a rectangle: (base 1 + base 2) / 2 is actually the width of a rectangle with an equivalent area. In order to use our area of a trapezoid calculator ...The equation for diameter of a circle from circumference is: d=c/\pi d = c/π. If written instead in terms of the radius, the diameter is very simple; it's just twice as long: d = 2r d = 2r. Dimensions of a circle: O - origin, R - radius, D - diameter, C - circumference ( Wikimedia) Area is the space contained within the circle's boundaries.In geometry, the area enclosed by a circle with radius (r) is defined by the following formula: πr 2. The Greek letter π ("pi") represents the ratio of the circumference of a circle to its diameter. In Excel, π is represented in a formula with the PI function, which returns the number 3.14159265358979, accurate to 15 digits: To square a ...Key in the value of the circle's radius or area. The calculator will find what size square fits in the circle using the formula: side length = √2 × radius. The side length and the area of the square inside the circle will be displayed! In this manner, you can find the maximal square that you can draw within a given circle.Circular fields using center pivot irrigation in the Mojave Desert, Nevada as seen from a plane on route from Toronto to San Francisco; the radius of a circle is typically ¼ mile (400 m), the circumference is 1.56 mi or 2.5 km and the area is 125.4 acres or 0.51 sq. km. This article was written by Anatoly Zolotkov.To find the radius from the diameter, you only have to divide by two: r=d/2 r = d/2. If you know the circumference it is a bit harder, but not too bad: r=c/2\pi r = c/2π. Dimensions of a circle: O - origin, R - radius, D - diameter, C - circumference ( Wikimedia) Area, on the other hand, is all the space contained inside the circle.Free online area converter - converts between 40 units of area, including square meter [m^2], square kilometer [km^2], square centimeter [cm^2], square millimeter [mm^2], etc. Also, explore many other unit converters or learn more about area unit conversions. ... 1 square foot [ft^2] = 0.09290304 square meter [m^2] square foot to square meter, ...You can calculate it as follows: If you know the radius or diameter of the circle, the area of the circle formula is: a = πr² = π × (d / 2)². If radius and diameter are unknown, you can calculate it from the circumference: a = c² / 4π. If you are interested in calculations of some fraction of a circle, check:The equation for diameter of a circle from circumference is: d=c/\pi d = c/π. If written instead in terms of the radius, the diameter is very simple; it's just twice as long: d = 2r d = 2r. Dimensions of a circle: O - origin, R - radius, D - diameter, C - circumference ( Wikimedia) Area is the space contained within the circle's boundaries.SF = πr² = πd²/4 For example, to know how to find the square feet of a circle with a 1524 cm radius, follow these steps: Convert 1524 cm to ft by dividing it by 30.48. The radius in cm would be: (1524/30.48) ft = 50 ft Learn more about this in our length converter. Input the radius in the SF formula: SF = π (50 ft)² = 7854 ft²Step 1: Clearly mark the dimensions of the figure or shape for which you have to calculate square footage. Step 2: Make sure all the dimensions are measured in feet if not convert them accordingly. Step 3: Use the various formula for finding the area of the given figure. Step 4: Add ft2 as the unit of the calculation in step 3.It is interesting to compare the area of a circle to a square: A circle has about 80% of the area of a similar-width square. ... Calculating a square hole: 0.4 × 0.4 = 0.16 m 2; 2. Taking 80% of that (estimates a circle): 80% × 0.16 m 2 = 0.128 m 2; 3. And the volume of a 1 m deep hole is: 0.128 m 3;0.0304296 square feet (ft²) 4.38186 square inches (in²) Use the this circle area calculator below to find the area of a circle given its diameter, or other parameters. To calculate the area, you just need to enter a positive numeric value in one of the 3 fields of the calculator. You can also see at the bottom of the calculator, the step-by ...Therefore a circle with a radius of 7 ft, has an area of: 3.142 × 9 × 9 = 153.958 square feet or 154 sq.ft. A circle with a diameter of 18 ft has an area: First we work out the radius (18ft ÷ 2 = 9 ft ) Then apply the formula: 3.142 × 9 x 9 = 254.502 square feet. The area of a circle with a diameter of 18 feet is 254.5 sq.ft. This calculator calculates for the radius, length, width or chord, height or sagitta, apothem, angle, and area of an arc or circle segment given any two inputs. Please enter any two values and leave the values to be calculated blank. There could be more than one solution to a given set of inputs. Please be guided by the angle subtended by the ...Mulch required (cubic yards) = Square footage × desired depth (in) / 324. The above formula helps you find out how many cubic yards of mulch you might need, but you may be buying your mulch by the bag, which is commonly sold in cubic feet in the US and in liter/litre bags in the UK. So, let's look at some measurement conversions.The Pipe Surface Area calculator computes the interior or exterior surface area of a pipe based on the interior or exterior diameter of circular conduit or pipe and the length of the pipe. INSTRUCTIONS: Choose units and enter the following: (d) Diameter of Pipe (use interior diameter for interior surface area, and exterior diameter for the exterior surface …Surface Area of a Pipe. Area=2ΠrL. Enter 2 values to get the third. Radius (r) Length (L) Surface area. For help with using this calculator, see the object surface area help page.Plant Calculator. This plant and landscaping calculator makes it easy to figure out how many plants you need, spacing, and coverage. Fill in any two fields and this tool will calculate the third field. Use this tool to determine: How many plants do you need to cover a specific area?Circle. Determine radius (1/2 distance of diameter or distance across) Formula: Radius x Radius x 3.14 = square feet. Square feet divided by sq. ft. per yard (from chart) = cubic yards needed. Example: Given a circle 30 feet across (15 ft radius) and you want 3 inches deep. Calculations:The empirical rule calculator, also known as a "68 95 99 rule calculation", is a tool that allows you to determine the ranges that are either 1 or 2 standard deviations or 3 standard deviations. This calculator will show you the ranges in which 68, 95, or 99.7% of normally distributed data, respectively.Simply enter the density of the material in which your are interested, select the shape from the drop-down list, enter the dimensions, then hit the “Calculate” button. The weight will appear in both metric and common US units. If you would like to use a typical density value for a material, simply select that material from the list in the ...Our application helps you work out an area of square feet, square meters or square yards for flooring, landscaping, carpets, tiling or construction projects. This tool also provides a cost of materials estimate. Example of costing: $ price: 23.00 per: 100 square unit: foot (ft²) meaning $23.00 per 100 square feet. We are happy to serve!cubic feet = lbh = length(ft) * width(ft) * height(ft) Where l-length, b-breadth/width, h-height/depth; How to solve cubic feet from inches. Example.1:- A container has a length of 40 inches, width of 80 inches and height of 36 inches, Then find the cubic feet/volume of the container in ft. Answer =>First change the unit into ft.

You can convert square inches, square yards, or square meters to square feet using one of the formulas below. Square Inches: sq ft = sq in ÷ 144. Square Yards: sq ft = sq yds × 9. Square Meters: sq ft = sq m × 10.764. You can use an area converter to convert any area measurement to sq ft. Use the formulas to calculate the circumference and area: c = 2πr and A = πr². The circumference should equal c = 2π × 8 cm = 50.265 cm. The area should equal A = π × (8 cm)² = 201.06 cm². To check your results, input the 8 cm diameter in the calculator. The results should also be 50.265 cm and 201.06 cm².Map Area Calculator. Note: Zoom in, or enter the address of your target start point. Then click on your start point on the map, followed by all the subsequent points along the outside edge of the shape you want to calculate the area of. As you add points the area will be updated below and converted into several measurements.Area of a circle in terms of circumference: Area = C2 4π = 6.282 4π = 39.48(4·3.14) = 39.4812.56 = 3.14 square meters (*) (*) 3.1415926535898 meters, exactly or limited to the precision of this calculator (13 decimal places). Note: for simplicity, the operations above were rounded to 2 decimal places and π was rounded to 3.14.How to calculate square feet for circles. To calculate the area of a circle, it's necessary to use the number pi, which is represented by the symbol π. You can use the decimal 3.14 to represent the value of pi. The formula to calculate the square footage of a circle is: A = π x radius2

A circle of radius = 38.5 or diameter = 77 or circumference = 241.9 inches has an area of: 3.00451E-6 square kilometers (km²) 3.00451 square meters (m²) 30045.1 square centimeters (cm²) 3004510 square millimeters (mm²) 1.16005E-6 square miles (mi²) 3.59336 square yards (yd²) 32.3403 square feet (ft²) 4657 square inches (in²)Plate Weight Calculator. Use this free tool to easily estimate the weight of carbon steel plates. Whether your plates are round or square, it will automatically account for plates with or without holes. Simply enter the dimensions and quantity to get the total weight. Contact us for a quick quote on fabricated plates for bolted applications.Calculate the top and bottom surface area of a cylinder (2 circles ): T = B = π r 2. Total surface area of a closed cylinder is: A = L + T + B = 2 π rh + 2 ( π r 2) = 2 π r (h+r) ** The area calculated is only the lateral surface of the outer cylinder wall. To calculate the total surface area you will need to also calculate the area of the ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. The image above displays two overlapping circles. Marked are r. Possible cause: The circumference of a circle is the length of the outer edge around its peri.