Question

Find the area of the circle pictured above.
Round your answer to the nearest tenth

Answer 1

Explanation:

Answer 2

~201.1
`u^2`

Explanation:

Formula for area of a circle:

`\pi r^2`

The diameter is any straight line that passes through the circle and endpoints lie on the perimeter of the circle.

We are given the diameter: 16. The diameter is twice the radius (for all circles) Divide the diameter, 16 by 2 to get the radius. If the problem gives you the radius, which is a line from the center of the circle, do not divide by 2 and directly plug into formula.

16/2 = 8

Plug into formula.

`\pi r^2`

`\pi 8^2`

Using PEMDAS, the standard order of operations order for math, we firsty do 8^2 before multiplying by pi.

8^2 = 8 x 8 = 64

`64*\pi` = ~201.1