Question

Find
The area of four walls of a room is 90 m². If the room is 7 m long and 2 m wide, then find the height of the room.
nudo nnd 6 m doon find the sum of the area of the four walls and its floor?​

Answer 1

Answer:

length=7m

Breadth=2m

Area of four walls =90sq.m

we know that,

Area of the four walls= Lateral surface area of cuboid=2(lh+bh)

=>90sq.m=2×(7m×h+2m×h)

=>90sq.m=2×(7m+2m)h

=>90sq.m/2=(7m+2m)×h

=>45sq.m=9m×h

=>45sq.m/9m=h

=>5m=h