Question

The area of four walls of a room is 51.sq metre. If the room is 5 m long and 3.5 m wide, find the height of the room.

Answer 1

Area of four walls = LSA of room = 2 * h * (l+b) sq units

lenth=5m breadth = 3.2m,

Area of four walls = 2 *h * (5+3.2)

2*h*8.2=57.4m2

h=57.4/2*8.2

h=57.4/16.4

h=3.5 m

Cheers!

Answer 2

$2(5 + 3.5) h = 51 \\ 2(8.5)h = 51 \\ h = 51 \div 17 \\ h =3$