# Hacktivateed

## How many square feet is a 25 diameter circle?

The area of a circle is given by pi times the square of the radius. Your circle has a diameter of 25 ft so the radius is 25/2 = 12.5 ft. Thus the area is pi x12. 52 sq.

How do you find the square foot of a diameter?

How to find the square footage of a circle

1. Measure the diameter of your circle in feet.
2. Divide your diameter by 2 and then square it (multiply it by itself).
3. Multiply your total by π (3.14159265)

How do I calculate the square footage of a round pipe?

Plug in L and D into the following equation to calculate the surface area of the pipe: 3.14 x L x D. For example, if you had a pipe with a length of 20 feet and a diameter of 2 feet, you would get 3.14 x 20 x 2 and find that the surface area of the pipe equals 125.6 square feet.

### How do you convert diameter to feet?

Divide the diameter, measured in feet, by two to find the radius of the circle. For example, if the circle’s diameter equals 4.5 feet, divide 4.5 by 2 to get 2.25 feet for the radius. Multiply the radius by the radius. Here, multiply 2.25 feet by 2.25 feet to get 5.0625 square feet.

What is the radius of a 6 foot circle?

We are given the circumference of a circle. We are asked to find the radius. => The radius is approximately . 96 ft.

What is the square footage of a 15 foot diameter circle?

Area of a 15 Foot Circle….How many square feet is a 15 foot diameter circle?

176.71 square feet
164,173 square centimeters
0.0016417 hectares

#### How do you figure out a diameter?

How To Calculate Diameter?

1. Diameter = Circumference ÷ π (when the circumference is given)
3. Diameter = 2√[Area/π] (when the area is given)

How do I calculate pipe size?

The equation for pipe diameter is the square root of 4 times the flow rate divided by pi times velocity. For example, given a flow rate of 1,000 inches per second and a velocity of 40 cubic inches per second, the diameter would be the square root of 1000 times 4 divided by 3.14 times 40 or 5.64 inches.

What is the area of an 18 inch duct?

Circular ventilation ducts and cross-sectional areas – Imperial Units

Duct Diameter Area
(in) (mm) (ft2)
18 457 1.767
20 508 2.182
22 559 2.640

## How many feet is a 15 foot diameter circle?

How many square feet is a 15 foot diameter circle?

176.71 square feet
164,173 square centimeters
0.0016417 hectares

What is the square footage of a 6 foot diameter circle?

113.1 square feet
The radius is 6 feet. Multiply the radius by itself to square the number (6 x 6 = 36). Multiply the result by pi (use the button on the calculator) or 3.14159 (36 x 3.14159 = 113.1). The result is the area of the circle in square feet–113.1 square feet.

What is the circumference with a radius of 5?

A circle with a radius of 5 units has a circumference of 31.416 units.

### What is the area of a 27 foot circle?

What is the area of a circle with a DIAMETER of 27 feet (radius of 13.5 feet)? How big is a 27 foot circle? The area of a circle is pi times the square of its radius. The radius is half the diameter. The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.

How to calculate the diameter of a square foot?

Many calculators include the constant pi on one key, eliminating the need to remember it. Measure the diameter of the circular area in feet using the tape measure. Divide the length of the diameter by 2 to find the radius (12 / 2 = 6). Multiply the radius by itself to square the number (6 x 6 = 36).

What is the square footage of a circle?

The radius is 6 feet. Multiply the radius by itself to square the number (6 x 6 = 36). Multiply the result by pi (use the button on the calculator) or 3.14159 (36 x 3.14159 = 113.1). The result is the area of the circle in square feet–113.1 square feet.

#### How tall is 7.3 feet in ft and in?

For example, if you have one measurement that is 7’3″ you can enter that as 7.25 feet (3″/12″ = 0.25 ft). If you have a measurement of 245 cm you can also enter that as 2.45 m.