Question

A wallpaper 312m long and 25cm wide is required to cover the wall of room . Leng5h of room is 7m and itsbreadth is twice its height determine the height of room ​

Answer 1

volume of the room = l×b×h

312×25 = 7m×2x×x

7800= 14x^2

7800/14= x^2

557 = x^2

√557 =x

x = 24.02