Area and Circumference of Circles

What is the circumference of the following circle?

Tags

CCSS.7.G.B.4

Find the area of a circle with a circumference of 131.95 meters.

Tags

CCSS.7.G.B.4

A painter finished painting the area of the center circle on a basketball court which has an area of 615.44 feet. Now he needs to paint the ring around the circle. What is the circumference of the center circle?

• 21.98

• 43.96

• 87.92

• 175.84

Tags

CCSS.7.G.B.4

The circumference of a circular horse pen is 94.24 ft. What is the area of the pen?

Tags

CCSS.7.G.B.4

Stephanie painted a circular plate in potter class. The circumference of her plate is 3π units. What is the area of her plate?

Tags

CCSS.7.G.B.4

Given the circumference, what is the area of the circle?

• 1.5 cm²

• 2.35 cm²

• 4.7 cm²

• 7.38 cm²

Tags

CCSS.7.G.B.4

I understand the difference between Circumference and Area of Circles.

• Area of a circle is the amount of space inside a circle, Circumference is the distance around a circle.

• Area and Circumference is easy for me.

• I need a bit of extra help on this topic.

• This is easy

Tags

CCSS.7.G.B.4

What is the area of a circle if the circumference is 138.16?

Tags

CCSS.7.G.B.4

Chris is sitting on the edge of a dock tossing rocks into the water. As each rock hits the water, small circles appear traveling outward from the point of impact. The radius of the circle is changing at a rate of 5 in/sec.  How fast is the area changing when the circumference is 4 in? 

• 40 in/sec

• 20 in/sec

• 20pi in/sec

• 40pi in/sec

Tags

CCSS.7.G.B.4

The circumference of a circular garden is 24.73 ft. What is the area of the garden?

Tags

CCSS.7.G.B.4