Area of Circle Given Circumference

The circumference of a circle is 28.26 cm. What is closest to the area of the circle.

• 254.34 cm²

• 14.13 cm²

• 63.6 cm²

Tags

CCSS.7.G.B.4

The Jones family wants to enclose their circular garden with a fence. To the nearest foot, what is the minimum length of fencing they need to buy?

• 56.25 ft

• 246.2 ft

• 365.56 ft

• 392.5 ft

Tags

CCSS.7.G.B.4

Jayne has a very large circular lollipop that has a circumference of 25.12 inches. What would the diameter of Jayne’s lollipop be? Round to nearest hundredth. Don't forget to label.

Tags

CCSS.7.G.B.4

What is the radius (round to nearest whole number)? Find the area the pizza covers (round to nearest hundredth). Don't forget to think about labels.

• 6 inches and 113.09 square inches

• 12 inches and 452.39.04 square inches

• 12 inches and 49.70 square inches

• 6 inches and 24.85 square inches

Tags

CCSS.7.G.B.4

If I know circumference of a circle I can find the area of that circle.

• True

• False

Tags

CCSS.7.G.B.4

Tags

CCSS.7.G.B.4

The distance around a circular track is 31.4 yards. What Is the radius of the track? Round to the nearest hundredth. Don't forget to label.

Tags

CCSS.7.G.B.4

If my circumference is 50.24 ft, what is my radius? Round to nearest hundredth. Don't forget to label.

Tags

CCSS.7.G.B.4

Answer explanation

You need to take the diameter (the number next to the pi) and divide it by 2 to get the radius.  You then plug it into the area formula:  A =  $\pi r^2$  

Tags

circles

circumference

area

pi

diameter

Answer explanation

You need to take the diameter (the number next to the pi) and divide it by 2 to get the radius.  You then plug it into the area formula:  A =  $\pi r^2$  

Tags

circles

circumference

pi

diameter

area