The perimeter of the floor of a hall is 250m. If the height is 4m, find the cost of painting the four walls at the rate of Rs. 12 per square meter.

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Solution

Cost $=$ Area $\times$ Rate
$=$ (perimeter $\times$ height) $\times$ Rate
$= (250 \times 4) m^{2} \times 12 R s$
$= 1000 \times 12 R s$
$= 12000 R s$

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The perimeter of the floor of a hall is 250m. If the height is 4m, find the cost of painting the four walls at the rate of Rs. 12 per square meter.

Cost = Area × Rate= (perimeter × height)× Rate=(250×4)m2×12Rs=1000×12Rs=12000Rs

Cost $=$ Area $\times$ Rate
$=$ (perimeter $\times$ height) $\times$ Rate
$= (250 \times 4) m^{2} \times 12 R s$
$= 1000 \times 12 R s$
$= 12000 R s$