Question

Total area of the four walls of a hall is 480 m2. If the height and length of the room are in the ratio of 3:8 and the height and breadth in the ratio 3:2, then find the area of the floor.

Answer 1

to answer this type of questions it is necessary to know this formula
2h(l+b)
if we consider height as 3x,length as 8x,breath as 2x
according to the formula
2*3x(8x+2x)
2*3x(10x)
6x*10x
60*
total area of four walls
480m²
60x=480
x=480÷60
x=8
height
3x=3*8
3x=24
length=8x
8x=8*8
x=64
breadth=2x
2x=2*8
2x=16
simple!