Question

eighth grade > w.8 surface area of spheres njw
what is the surface area of this sphere?
round your answer to the nearest hundredth.
10.8 yd
square yards

Explanation:

Step1: Find the radius

The diameter is 10.8 yd, so radius $r = \frac{10.8}{2} = 5.4$ yd.

Step2: Apply surface area formula

Surface area of sphere: $SA = 4\pi r^2$. Substitute $r = 5.4$:
$SA = 4 \times \pi \times (5.4)^2 = 4 \times \pi \times 29.16 = 116.64\pi$.

Step3: Calculate numerical value

$116.64 \times 3.14159265 \approx 366.435$.

Step4: Round to nearest hundredth

$366.435 \approx 366.44$.

Answer:

366.44 square yards