Problema Solution
The surface area of a sphere is 169*pie square inches and the area of its zone is 81*pie square inches. Find the altitude of the zone?
Answer provided by our tutors
The radius = R
The surface area of a sphere = 4*pi*R^2 = 169*pi
R = 6.5
The altitude of the zone is H
The area of its zone = 2*pi*R*H = 2*pi*6.5*H = 81*pi
H = 81/13 = 6.23 inches