Question

what is the surface area of this sphere?
round your answer to the nearest hundredth.
7.8 ft
____ square feet

Explanation:

Step1: Recall sphere surface area formula

The formula for the surface area of a sphere is $SA = 4\pi r^2$, where $r$ is the radius.

Step2: Identify the radius

The given radius $r = 7.8$ ft.

Step3: Calculate $r^2$

$r^2 = 7.8^2 = 60.84$

Step4: Compute surface area

$SA = 4 \times \pi \times 60.84 = 243.36\pi$
Calculate the numerical value: $243.36 \times 3.1416 \approx 764.54$

Answer:

764.54 square feet