Question

a hall is 20m and with is 16 m the sum of areas of the floor and the flat roof is equal to sum or to the sum of areas of the four walls find the height of the wall hall

Answer 1

Given l = 20 cm and b = 16cm Given areas of floor and flat roof = sum of areas of the four walls 2(lb) = 2(l + b)h 2(20)(16)) = 2(20 + 16)h 640 = 72h 72h = 640 h = 640/72 h = 8.89 (nearly)