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Q: What is area of s circle with 1 inch radius?

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30 inches; the radius of a circle is 1/2 its diameter.

Pi is related to the area and the circumference of the circle. The area is Pi multiplied by the radius of the circle squared and the circumference is Pi times the diameter of the circle. if you're wondering how it works, pi is the area of a circle with radius of 1 (unit), and the circumference of a circle with a radius of ½ (unit).

Well a circle has 360 degrees so a sector of 90 degrees has an area equal to 90/360 (or 1/4) of a circle with the equivalent radius. The area of a circle is defined as PI*Radius^2 so the area of a 90 degree sector will be 1/4*PI*Radius^2. The area will be 1/4*3.14*10^2 or 78.5 in^2.

You find the area of the entire circle (pi x radius^2), and then multiply it by 1/4 or 0.25.

Area of a circle = pi*r2 where pi = 3.14159 (approx) and r is the radius of the circle. Equivalently, area = 1/4*pi*d2 where d is the diameter.

Related questions

1/2 inch

The area of a circle is pi times (radius squared) Thus if radius is one inch then area is (pi) times (1) times (1) = pi = 3.1416 inches squared

1 inch

It is because your 1 inch is one circle 1 inch one circle one of each get it.

2 inches. the radius is half of the diameter

If a circle's area is 3.14 (Pi), its radius is: about 1.

30 inches; the radius of a circle is 1/2 its diameter.

1" if it's a 1" diameter circle, 2" if it's a 1" radius circle.

2 inches

Multiply the radius by (2 x pi).

A circle with a radius of 1 unit has an area of 3.14 square units.

Calculate the radius, which is simply 1/2 the diameter. Then use the standard formula for the area of a circle. ________________________________________________________________ The circle area = (pi) x diameter / 4 = 3.14 x 25/4 = 19.625 Sq inch

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