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Find the area of a circle with radius 7 ft. Use the π key on your calculator and round your answer to the nearest tenth.

1 answer

To find the area of a circle, you use the formula:

\[ \text{Area} = \pi r^2 \]

where \( r \) is the radius of the circle.

Given the radius (\( r \)) is 7 feet, you can plug this value into the formula:

\[ \text{Area} = \pi \times 7^2 \]
\[ \text{Area} = \pi \times 49 \]

Using the π key on your calculator:

\[ \text{Area} \approx 3.141592653589793 \times 49 \]
\[ \text{Area} \approx 153.93804002589985 \]

Rounding to the nearest tenth:

\[ \text{Area} \approx 153.9 \text{ square feet} \]

So, the area of the circle is approximately **153.9 square feet**.