Question

A room is 9.5 m long,7.5 m broad and 2.5 m high .it has one door of dimensions 2 m×3 m and two window each of dimensions 3.5 ×2 m. Find the cost of painting the four walls rs 5.60 per square metre

Answer 1

area of four walls 2(l+B)×h

dimension of door = 2×3= 6m

dimension of window= 3.5×2=7m
two windows= 2×7= 14m

now area of walls= 2(9.5+7.5)×2.5

34×2.5=85m^2

now 85-14+6= 65m^2

now cost= 5.60 per square metre

so.65×5.60=364rs

hope it help you