Question

classmate
Date
Page
A rectangular room measuring
3.2 m by 2.8 m has a height 2.4m
The walls of the room are to be
painted. Find the cost of painting
the four walls at ₹15 per square meter.
​

Answer 1

Answer:

Length : 3.2m

Breadth : 2.8m

Height : 2.4m

Area of four walls = 2(lh+bh)

= 2(3.2*2.4 + 2.8*2.4)

= 2(7.68+6.72)

= 2(14.4)

= 28.8m²

Cost of 1m² = ₹15

Cost of 28.8m² =28.8*15

= ₹432