Question

A room is 10 m long 6 m wide and 4.2 m high. It has one door of 2.5m×1.5m and one window of dimension 1.5m×1m.find the cost of whitewashing the walls at rupees 2.50 per sq.m

Answer 1

Answer:

Step-by-step explanation:

area of room=2×h(l+b)

=2×4.2 (10+6)

=8.4×16

=134.4sq.m

area of door =2.5×1.5

=3.75sq.m

area of Window =1.5×1

=1.5sq.m

area of walls=room-door-window

=134.4 -3.75 -1.5

=132.15sq.m

cost of whitewashing =132.15×2.50

=333.075rupees