Answer:
320in²
Step-by-step explanation:
Labelled diagram shown above.
Surface area : base × height
The surface area of most of the sides will be the same because the sides are the same.
Top/bottom = 5 × 8 = 40 + 40 = 80in²
Side/Side = 5 × 10 = 50 + 50 = 100in²
Front/Back = 8 × 10 = 80 + 80 = 160in²
Add them all together.
160 + 100 + 80 = 340in²
B
the volume (V) of a sphere = πr³
We require to know the radius r to calculate the volume
using surface area of a sphere = 4πr² = 615.752
divide both sides by 4π
r² = = 49.0248...
take the square root of both sides
r = ≈ 7, hence
V= × π × 7³ = 1436.76 m³ → B