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.
1.3 ft
square feet

Explanation:

Step1: Identify the radius

The radius \( r = 1.3 \) ft.

Step2: Apply surface area formula

Surface area of sphere: \( 4\pi r^2 \)
Substitute \( r = 1.3 \): \( 4\pi (1.3)^2 \)

Step3: Calculate the value

\( (1.3)^2 = 1.69 \), so \( 4\pi \times 1.69 = 6.76\pi \approx 6.76 \times 3.1416 \approx 21.237 \)

Step4: Round to nearest hundredth

\( 21.237 \approx 21.24 \)

Answer:

21.24