## Using pie! 3.14 calculate the areas of the circles with diameter of 21 and leave your answer in 2 demical place

Question

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

## Answers ( )

If we use 3.14 as pi, the areas of these circles are 415.265 square units (I recommend rounding up to 415.27 unless it says otherwise).

Step-by-step explanation:To find the area of a circle, square the radius and multiply it by pi. To find the radius, we divide the diameter by 2 to get 11.5. Then, square 11.5 to get 132.25 and multiply by pi, or 3.14, to get 415.265, rounding up to 415.27 square units.