Area of a Circle Answers

Which are true about the area of a circle? Check all that apply.

What is the approximate area of the circle rounded to the nearest tenth? m2

What is the approximate area of the circle? Use 3.14 for and round the answer to the nearest tenth.

What is the approximate area of the circle that fits perfectly inside of the square? Use = 3.14 and round to the nearest tenth. cm2

Which is greater, the area of a red plate that has a radius of 6 cm, or the area of two yellow plates with a radius of 3 cm each?

Morgan is reupholstering an old chair with two circular cushions. Each cushion has a circumference of 7.85 feet. He will need two pieces of fabric for each cushion. How many square feet of fabric will he need to cover the cushions? Use = 3.14 and round to the nearest square foot. ft2

What is the area of this circle in terms of pi?

What is the value of the radius rounded to the nearest tenth? What is the approximate area of the circle rounded to the nearest tenth? m2

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 = 3.14 and round the answer to the nearest square foot. ft2

Caisha has a circular garden with a radius of 4 ft. She needs to put a layer of soil on top. Each bag of soil covers 9.42 square feet. How many bags of soil will she need to buy?

The formula for the area of a circle can be found by using a parallelogram. Explain the way to derive the formula.

Check all that you included in your response.