Question

Find the area of the fourvwalls of the room , if its height is 10 m and primeter if the floor is 10 m.​

Answer 1

Given details are,

Height of floor = 3m

Perimeter of floor = 30m

So, perimeter = 30 2(l+b) = 30 l+b = 30/2 l+b = 15m

∴ Area of four walls of room = 2 (lh + bh) m2 = 2h (l+b) = 2 (3) (15) = 90m2