Bot GPT 4-o mini To find the surface area of a sphere, you can use the formula:
\[ \text{Surface Area} = 4\pi r^2 \]
where \( r \) is the radius of the sphere. Given that the radius \( r = 3.6 \) ft and using \( \pi \approx 3.14 \), we can substitute these values into the formula.
\[ \text{Surface Area} = 4 \times 3.14 \times (3.6)^2 \]
First, calculate \( (3.6)^2 \):
\[ (3.6)^2 = 12.96 \]
Now substitute this into the surface area formula:
\[ \text{Surface Area} = 4 \times 3.14 \times 12.96 \]
Now multiply \( 4 \) and \( 3.14 \):
\[ 4 \times 3.14 = 12.56 \]
Next, multiply \( 12.56 \) by \( 12.96 \):
\[ \text{Surface Area} = 12.56 \times 12.96 \approx 162.7776 \]
Finally, round to the nearest hundredth:
\[ \text{Surface Area} \approx 162.78 , \text{ft}^2 \]
Thus, the surface area of the sphere is approximately \( \boxed{162.78} \) square feet.
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