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olasank [31]
3 years ago
9

Please help me with these 3 questions!! Will mark Brainliest :)

Mathematics
1 answer:
dem82 [27]3 years ago
6 0

Answer:

7. 75.36 inches

8. 21 inches

9. 13 inches

Step-by-step explanation:

7. <em>Circumference = π × d</em>

The diameter would be two times the radius, or 2 × 12 = 24. So, circumference would be 3.14 × 24 = 75.36 inches.

8. <em>Circumference = π × d</em>

If we move variables around, <em>d = Circumference / π</em>

So, d = 65.94 / 3.14 = 21 inches.

9. To do this, let's figure out the diameter: <em>d = Circumference / π</em>

d = 81.64 / 3.14 = 26. Now the diameter is two times the radius, so to get the length of the radius, we must divide the diameter in half. 26 / 2 = 13 inches.

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