Question

Dairy of the four walls of a room is 77 m square the length and the breadth of the room are 7. 5 and 3. 5 respectively find the height of the room

Answer 1

Area of the four walls of a room =
2(l+b)*h
= 2(7.5+3.5)*h = 77
= 2*11*h= 77
= h = 77/22 = 3.5m