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

31.4

200

What is the circumference of a circle with a diameter of 4?

12.56

300

Find Circumference when Radius = 25

157

400

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

69.08

500

Find Circumference when Radius = 75

471

Area

100

Find Area when Radius = 4

50.27

200

Find Area when diameter = 28

615.44

300

Find Area when Radius = 21

1,384.74

400

Find Area when diameter = 70

3,846.5

500

Find Area when Radius = 50

7,850

Perimeter - Semicircle

100

What is the perimeter of (only) a semicircle with a diameter of 2?

(Meaning just the circular part)

3.14

200

What is the perimeter of (only) a semicircle with a radius of 8?

(Meaning just the circular part)

25.12

300

What is the perimeter of the ENTIRE semicircle with a base(diameter) of 10?

(Meaning the circular part AND the base)

25.7

400

What is the perimeter of the ENTIRE semicircle with a base(diameter) of 15?

(Meaning the circular part AND the base)

38.55

500

What is the perimeter of an ENTIRE semicircle with a radius of 10?

(Meaning the circular part AND the base)

51.4

Area - Semicircle

100

What is the area of a semicircle with a diameter of 6?

14.13

200

What is the area of a semicircle with a radius of 5?

39.25

300

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

157

400

What is the area of a semicircle with a radius of 11?

189.97

500

What is the area of a semicircle with a diameter of 100?

15,700