Question

### Gauthmathier0316

Grade 9 · 2020-11-03

The area of a circle is \text{A}. What would be the area if you triple the radius of the circle? （ ）

Good Question (51)

Answer

5(844) votes

### Gauthmathier0135

Grade 9 · 2020-11-03

Answer

C

Explanation

The area of a circle is \text{A}. \rightarrow\pi\text{r}^2=\text{A} where \text{r} is the radius of the circle.

If you triple the radius of the circle, the area of the new circle is

\pi (3\text{r})^{2}=9( \pi\text{r}^{2})=9\text{A}

The answer is (C).

If you triple the radius of the circle, the area of the new circle is

\pi (3\text{r})^{2}=9( \pi\text{r}^{2})=9\text{A}

The answer is (C).

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