Question

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

Answer 1

a=78.5 meters^2

Explanation:

First, we have to find the radius

r=d/2

r=10/2

r=5

Substitute 5 in for r in the area formula

a=
`\pi`r^2

a=
`\pi`5^2

a=
`\pi`25

Substitute 3.14 in for pi

a=25*3.14

a=78.5 meters^2

Hope this helps!

Answer 2

The answer is 78.5 you can get this by multiplying pi by the radius which is 5 then square it and you get 78.5