Question

total surface area of a cylinder is 8448, radius is 28cm what is the height?

Answer 1

TSA = 8448
=> 2pi r(h+r) = 8448
=> 2*22*28(h+28)/7 = 8448
=> 44*4(h+28) = 8448
=> h+28 = 8448/44*4
=> h+28 = 48
=> h = 20 cm