240(3/5) = 144
240(2/5) = 96
144-96 = 48
48 boxes must be added
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
I think it’s 96. That’s what I got.
Answer:
After ten years his salary is x2
Step-by-step explanation: