Question

A room is 8m long, 6m broad and 5.5m high. It has one door of dimensions 2.5m by 2m and two windows each of dimensions 1.5m by 1m. Find the cost of whitewashing the walls at ru.3.20 per sq.m. ​

Answer 1

Answer:

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Step-by-step explanation:

lateral surface area of room=2h(l+b)

=(11×14)m^2

=154m^2

area of door=2.5m×2m=5m^2

area of window=1.5m×1m=1.5m^2

area of wall to be whitewashed=(154-5+1.5)m^2

=147.5m^2

cost of whitewashing=147.5×₹3.20=₹472

Answer 2

Answer:

Rs.467.2

Step-by-step explanation:

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