Question

Area of four walls of a room is 10 m square if height and length of a room is in ratio 2 is to 5 and height and breadth are in ratio 4 is to 5 find the area of the floor of the room

Answer 1

Solution :

Given L:H=5:2

H:B=4:5

L:H:B=20:8:10

Area of four wall of a rooms is =2(l+b)h

108=2(l+b)h

1082=(l+b)h

54=(l+b)h

(20x+10x)8x=54

240x2=54

x2=54240

x2=0.225

The area of floor of the room = l×b

=> 20x×10x

=> 200x2

=> 200×0.225

=> 45m2

The area of floor of the room =45m2

Answer : 45m2