a classroom is 8m long, 7m board and 4.5m high. doors and windows occupy an area of 18m². find the cost of whitewashing the walls at the rate of ₹2.50 per sq. m.
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Answered by
0
Answer:
rs 337.50
Step-by-step explanation:
hope it helps you
Answered by
0
Answer:
is 337.50
Step-by-step explanation:
a class room is in a cubiodal shape
length=8m
breadth=7m
height=4.5m
to find the cost of whitewashing the walls.first we have to find out the lateral surface area of cubiod.
lateral surfacearea of cubiod=2h(l+b)
= 2×4.5(8+7)=9(15)=135 square metre
the cost 1 sq.m is Rs.250
the cost of whitewashing the wall=2.50×135
=RS.337.50
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