Question

the area of four walls of a room is 315 m'2 . the ratio of length to breadth is 4 : 3 and the height is 4•5 m . find the area of the floor​

Answer 1

Answer:

Let length be 4x and breadth 3x. Then area of 4 walls =2×4.5×(4x+3x)=63x=315

x=315/63=5

So length=4×5=20, breadth=12

Area of the floor =20×12=240 Ans