The formula for the surface area \( A \) of a sphere is given by:
\[ A = 4 \pi r^2 \]
where \( r \) is the radius.
Given a radius of \( r = 3.6 \) ft and using \( \pi \approx 3.14 \):
\[ A = 4 \times 3.14 \times (3.6)^2 \]
First, calculate \( (3.6)^2 \):
\[ (3.6)^2 = 12.96 \]
Now, plug that value back into the surface area formula:
\[ A = 4 \times 3.14 \times 12.96 \]
Calculating \( 4 \times 3.14 \):
\[ 4 \times 3.14 = 12.56 \]
Now, multiply \( 12.56 \) by \( 12.96 \):
\[ 12.56 \times 12.96 \approx 162.3496 \]
Finally, rounding to the nearest hundredth, we get:
\[ A \approx 162.35 \text{ ft}^2 \]
Therefore, the surface area of the sphere is approximately 162.35 ft².
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