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One revolution of a 40 cm diameter ball compared to a 20 centimeter diameter ball is:

A. 2 times as great.
B. 4 times as great.
C. The same
D. 1/2 times as great.

Respuesta :

We need to compare their circumferences.

Since circumference = π * diameter,

40π : 20π = 2 : 1

Hence, the answer is (A).
churchlilly

Answer:

D. 1/2 times as great.

Step-by-step explanation:

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