Question

A room is 10m long 6m wide and 4.2m high.It has one door of 2.5m×1.5m and one window of dimensions 1.5m×1.m.Find the cost of whitewashing the walls at rs2.50per sq.m.
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Answer 1

Answer:

area of room=2xh(l+b)

=2×4.2 (10+6)

=8.4×16

=134.4sq.m

area of door =2.5x1.5

=3.75sq.m area of Window=1.5x1

=1.5sq.m

area of walls=room-door-window

=134.4 -3.75 -1.5

=132.15sq.m cost of whitewashing =132.15x2.50

=333.075rupees

Step-by-step explanation:

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