Question

Find the area of each circle. Round to the nearest tenth.

Answer 1

Area= 50.3cm^2

Explanation:

Use the area of a circle formula A= πr²

Then plug in your radius which is half of your diameter.

A=π(4)² = 50.3 cm²

Answer 2

A≈50.27

Explanation:

Using the formulas

A=πr2

d=2r

Solving forA

A=1/ 4πd^2=1/ 4·π·82≈50.26548