A circular plate has circumference 21.4 inches. What is the area of this plate? Use 3.14 for pi.

Question

asked May 1, 2021 58.5k views

1 Answer

Hong · Answer 1 · 2021-05-08T01:52:01+0000

Answer:

The area of this plate is
$36.31\ \text{inches}^2$ .

Explanation:

We have,

Circumference of a circular plate, C = 21.4 inches

The circumference of a circular shape is given by :

$C=2\pi r$

r is radius of circular shape

$r=(C)/(2\pi)\\\\r=(21.4)/(2* 3.14)\\\\r=3.4\ \text{inches}$

Area of this plate is given by :

$A=\pi r^2\\\\A=\pi (3.4)^2\\\\A=36.31\ \text{inches}^2$

So, the area of this plate is
$36.31\ \text{inches}^2$ .