Question

Claire has a hot tub with a diameter of 7 feet. She wants to purchase a cover to protect the hot tub. What is the area of the cover? Use Pi = 3.14 and round the answer to the nearest square foot.

_____ ft2

Answer 1

area = 3.14(r)^2
3.14(3.5)^2
=38.465
=38.5 (rounded)

Answer 2

Pretty sure it's 38 ft^2

Explanation:

Formula for circles=πr^2

So radius is 3.5 because radius is half the diameter

so 3.5^2=12.25

And 12.25 times 3.14 is your answer