Question

The length of a room is twice it's breadth it's height is 5m the area of 4 walls is 210sq.m find its volume

Answer 1

Answer:

Please refer the following attachment

Step-by-step explanation:

Answer 2

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let the length and breath as 2x and x

area of 4 walls = 2h(l+b)
210 = 2*5(2x+x)
210 = 10(3x)
210 = 30x
210/30 = x
7 = x

now length=14 and breadth = 7

so volume = l*b*h
= 14*7*5
= 490 m^3