Question

the perimeter of the floor of a hall is 300 m and its height is 6 m find the cost of painting the four walls @ rupees 15 per square metre

Answer 1

Answer:

Step-by-step explanation:

Perimeter of base=300m

2(L+b)=300m----------(1)

Height=6m

Area of 4 walls=2h(l+b)

Area of 4 walls=2(l+b)×h

From(1) we get,

Area of 4 walls=300×6

Area of 4 walls=1800m^2

Cost of painting 1 sq.metre=Rs15

Cost of painting 1800 sq.metre

=Rs(15×1800)

=Rs27000

Answer 2

Answer:

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