Question

How do you find the area of a circle with a diameter of 10in?

*Show all your work and find the area

Answer 1

A= 78.54

Explanation:

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·102≈78.53982in²

Answer 2

`25\pi` units²

Explanation:

Since the radius is half of the diameter, the radius of the circle is 5 inches. Thus, the area of the circle is:

`A=\pi r^2\\\\A=\pi(5)^2\\\\A=25\pi`