Circles (given Circumference, Area/Words/Semicircles)

How do you find the area of a circle?

• $\pi d^2$

• $2\pi^2$

• $2\pi r$

• $\pi r^2$

Tags

CCSS.7.G.B.4

A _____ is half of a circle.

• circumference

• pi

• semicircle

• composite figure

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

The circumference is 62.8 inches. What is the radius? Round to the nearest whole number. Don't forget to label.

Tags

CCSS.7.G.B.4

A circular pie has an area of 706.5 cm². What is the radius of the pie? Round to nearest whole number. Don't forget to label.

Tags

CCSS.7.G.B.4

Ms. Merine calculated that her hoop earring has a diameter of 3.5 centimeters. What is the area of her earring? Round to the nearest hundredth. Label as square centimeters or sq cm.

Tags

CCSS.7.G.B.4

Hannah drew a circle with a radius of 30 cm. Jonas drew a circle with a radius of 20 cm. What is the approximate difference in the areas of their circles? Round to the nearest hundredth. Use a comma in your answer and label as (sq cm) or (square cm) or (square centimeter)

Tags

CCSS.7.G.B.4

A circular swimming pool has a radius of 15 feet. The family that owns the swimming pool wants to put up a circular fence that is 5 feet away from the pool at all points. What is the circumference of the fence they will need? Hint: Draw what you know. Round to nearest hundredth. Don't forget to label.

Tags

CCSS.7.G.B.4

The stained glass window is a semicircle. What is the distance around the window? Round to 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