Area of a Circle

Question 1

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

Revolt · Accepted Answer

The units are always squared.; The area can be found when given the diameter by first finding the radius.; Circumference can be used to find area.

Question 2

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

Revolt · Accepted Answer

18.1

Question 3

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

Revolt · Accepted Answer

16 cm2

Question 4

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

Revolt · Accepted Answer

95.0 in2

Question 5

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

Revolt · Accepted Answer

2.4 m; Selection 1: 2.4 m; Selection 2: 18.1

Question 6

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

Revolt · Accepted Answer

19.6

Question 7

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?

Revolt · Accepted Answer

The red plate has an area larger than that of the two yellow plates.

Question 8

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?

Revolt · Accepted Answer

6 bags

Question 9

Question 11

Revolt · Accepted Answer

2.4 m; 18.1

Question 10

Check all that you included in your response.

Revolt · Accepted Answer

Cut the circle into slices and reshape to form a parallelogram.

Area of a Circle Answers

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