Area and Circumference

Radius/Diameter

100

If the radius is 5 what is the DIAMETER?

10

200

If the diameter is 20 what is the RADIUS?

10

300

If the radius is 30 the DIAMETER is?

60

400

If the radius is 20 what is the DIAMETER?

40

500

If the Radius is 50 what is the DIAMETER?

100

Circumference

100

Find circumference: When radius = 5

31.42

200

What is the circumference of a circle with a diameter of 2?

6.28

300

Find Circumference when Radius = 25

157.08

400

What is the circumference of a circle with a diameter of 14?

43.96

500

Josh and Emily got on a ferris wheel. How high will they be at the top of the ferris wheel if the circumference is 300 ft?

95.54 ft

Area - Radius

100

Find Area when Radius = 4

50.27

200

Find Area when Radius = 14

615.75

300

Find Area when Radius = 21

1,385.44

400

Find Area when Radius = 35

3,848.45

500

Ellie needs new grass in the circular pen for her chickens. What is the area of the pen if the circumference is 176 feet of fencing? 

2461 ft²

Circumference/Area of a semicircle

100

What is the area of a semicircle with a diameter of 20 inches?

157 in²

200

What is the circumference of a semicircle with a radius of 10?

51.4

300

What is the area of a semicircle with a radius of 2 feet?

6.28 ft²

400

What is the circumference of a semicircle with a diameter of 15?

38.55

500

What is area of a semicircle if the radius is 30 in?

154 in²

Area - Diameter

100

What is the area of a circle with a diamater of 6?

28.27

200

What is the area of a circle with a diameter of 10?

78.54

300

What is the area of a circle with a diameter of 20?

314.16

400

What is the area of a circle with a diameter of 22?

380.13

500

The athletic department wants to paint the school's mascot logo on the gym wall. What is the maximum diameter of the logo if only one quart of blue paint is used if one quart covers 113.04 feet squared?

12 feet