To find the area of a circle, you can use the formula:
\[ \text{Area} = \pi r^2 \]
Here, \( r \) is the radius of the circle. Given the radius \( r \) is 12 inches, you can substitute this value into the formula:
\[ \text{Area} = \pi \times (12)^2 \]
\[ \text{Area} = \pi \times 144 \]
Using the approximate value for \(\pi \), which is 3.14159, we get:
\[ \text{Area} \approx 3.14159 \times 144 \]
\[ \text{Area} \approx 452.39 \]
When you round this to the nearest tenth, you get:
\[ \text{Area} \approx 452.4 \text{ in}^2 \]
Therefore, the area of the circle with a radius of 12 inches, rounded to the nearest tenth, is:
\[ 452.4 \text{ in}^2 \]
7.
Find the area of a circle whose radius is 12 in. Round to the nearest tenth.
452.4 in2
113.1 in2
37.7 in2
75.4 in2
1 answer
2 answers