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Circle Review Worksheet


Please help

Circle Review Worksheet Please Help class=

Sagot :

akposevictor

Answer/Step-by-step explanation:

Recall: circumference of a circle, C = πd or C = 2πr

Where d = diameter

Radius (r) = ½ of diameter

1. Radius (r) = 3 cm

Diameter (d) = 2(3) = 6 cm

Circumference = πd = π*6

C = 18.8495559 ≈ 18.8 cm (nearest tenth)

2. Radius (r) = 6 in.

Diameter (d) = 2(6) = 12 in.

Circumference = πd = π*12

C = 37.6991118 ≈ 37.7 in. (nearest tenth)

3. Radius (r) = 9 mm

Diameter (d) = 2(9) = 18 mm

Circumference = πd = π*18

C = 56.5486678 ≈ 56.5 mm (nearest tenth)

4. Radius (r) = ½(4.8) = 2.4 cm

Diameter (d) = 4.8 cm

Circumference = πd = π*4.8

C = 15.0796447 ≈ 15.1 cm (nearest tenth)

5. Radius (r) = ½(7) = 3.5 cm

Diameter (d) = 7 cm

Circumference = πd = π*7

C = 21.9911486 ≈ 22.0 cm (nearest tenth)

6. Radius (r) = ½(14) = 7 cm

Diameter (d) = 14 cm

Circumference = πd = π*14

C = 43.9822972 ≈ 44.0 cm (nearest tenth)

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