Question

Himanshu of class 8 also want to pay for the white washing of the room in which the children are studying. the cost of white washing is Rs 10 per square metre . Find the amount paid by Himanshu for white washing four walls and ceiling of the room length 10m breadth 8m height 4m
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Answer 1

area of four walls = 2(l+b)h

=2(10+8)4

=2×18×4

= 144m²

cost of white washing= 144×10

=1440₹