Circumference Area of Circles

A DVD has a diameter of 15 millimeters. Which equation would help you determine the area?

• A = 15²π

• A = 2π15

• A = 7.5²π

• A = 15 π

Tags

CCSS.7.G.B.4

A circle has a radius of 5 cm. What is the area?

• 78.5 cm²

• 31.4 cm²

• 15.7 cm²

• 314 cm²

Tags

CCSS.7.G.B.4

The circumference of a circle is 37.68 yds. What is the diameter? Use 3.14 for Pi.

• 118.3 yds

• 6 yds

• 12 yds

• 59.5 yds

Tags

CCSS.7.G.B.4

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

What is the diameter of circle with a radius of 6?

• 12

• 36

• 2 times 3

• 42

Tags

CCSS.7.G.B.4

What is the formula to find the area of a circle?

• A = πd

• A = 2πr

• A = πr²

• A = xyz

Tags

CCSS.7.G.B.4

What is the area of a circle?

• The distance around a circle.

• The space inside the circle.

• A line from side to side passing through the center.

• A line from the center to the side.

What is circumference?

• The distance around a circle.

• The space inside the circle.

• A line from side to side passing through the center.

• A line from the center to the side.

Find the area of the circle

• 43.96

• 153.86

• 87.82

• 307.72

Tags

CCSS.7.G.B.4

A horse is tethered to a peg at the center of the field. If the length of the rope is 18.3 m (radius), what will be the maximum area the horse can graze?

• 1051.6 m²

• 57.5 m²

• 75.76 m²

• 4206 m²

Tags

CCSS.7.G.B.4