Problema Solution
The ratio of the radii of two spheres is 3:4. If the sum of their total area is 838*pie squared centimetere, find the radii of the two spheres.
Answer provided by our tutors
The radius of two spheres are 3x and 4x.
The total area = 4*pi*(3x)^2 + 4*pi*(4x)^2 = 100*pi*x^2 = 838*pi
x = 2.895 cm
So
The radius of two spheres are 8.68 cm and 11.58 cm