Question

What is the area of a circle with a radius of 9 inches?

Answer 1

A = 254.34 Approximately

Explanation:

Formula { Area of circle}:

A = πr²

Given:

Radius = 9 in

Note:

π = 3.14(approximately)

Solve:

Substitute :

A = πr²

A = 3.14(9)² {exponent ² means # x #}

A = 3.14(81)

A = 254.34

Kavinsky

Answer 2

approximately 254.47 square inches

Explanation:

area of a circle = πr² , where r = radius

here we want to find the area of a circle with a radius of 9 inches

so r = 9

we have A = πr²

==> plug in r = 9

A = π(9)²

==> evaluate exponent

A = 81π

==> multiply 81 and π

A = 254.47 ( rounded )