Question

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

Answer 1

cost of painting is 27000

Answer 2

Answer:

$cost\:of\: painting\:the\:four\:walls\\ =Rs\:27000$

Step-by-step explanation:

$Dimensions\:of\:a\:room:\\Perimeter\:of\:the\:floor(P)=300\:m\\Height(h)=6\:m$

$Area\:of\:the\:four\:walls(A)=ph\\=300\:m \times 6\:m \\=1800\:m^{2}---(1)$

$It\:is\: given \:that,\\cost\:of\: painting \:1\:m^{2}=Rs\:15$

$cost\:of\: painting\:the\:four\:walls\\ =15\times 1800\:m^{2}\\=Rs\:27000$

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