Question

The diameter of a circle is 10 meters. What is the area of the circle? (Use 3.14 for and round to the nearest tenth.)

A.31.4 m
B.62.8 m
C.78.5 m
D.125.6 m

Answer 1

C. 78.5 m

Area = (3.14) * r^2

Answer 2

Option (c) is correct.

The Area of given circle is 78.5 m²

Explanation:

Given : The diameter of a circle is 10 meters.

We have to determine the area of the given circle.

Consider the given circle with diameter 10 meters

Radius is half of diameter

So , Radius = 5 meters

Area of circle =
`\pi\cdot r^2`

Thus, Area of circle =
`\pi\cdot 5^2`

Simplify by putting π = 3.14

We have,

Area of circle =
`3.14\cdot 25=78.5`

Thus, The Area of given circle is 78.5 m²