Question

### Gauthmathier7404

Grade 12 · 2020-11-04

The length of the radius of circle A is 4 times as long as the radius of circle B. If the radius of circle B is x units, what is the area (in square units) of circle A? （ ）

Good Question (65)

Answer

4.7(666) votes

### Gauthmathier1341

Grade 12 · 2020-11-04

Answer

D

Explanation

The correct answer is D. The radius of circle A is 4x. So its area is \pi (4x)^{2}=16 \pi x^{2}.

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