The answer should be 10 + 10i. Hope that helps.
As we know from geometry, the volume of any given sphere is
V = 4/3*πr³
Since a hemisphere is half of any given sphere, its volume should be
V = 4/3*πr³ ÷ 2
V = 2/3*πr³
This will be our working equation for finding the volume of hemisphere. Since r is already given to be 5 units, we substitute this to the working equation:
V = 2/3*π(5)³
V = 261.8 cubic units
Actually:
1 5/8 simplifies to 1.625. Do 5.8 and get 0.625 then add 1. Its 1.625. So 1.625/1.625=1. Its the same thing with mixed number. (1 5/8) / 1.625 = 1
