Question

A godown is 50m long 40m broad 10m high. find the cost of whitewashing its four walls and ceiling at Rs 20 per square meter

Answer 1

Please refer the image

Hope it helps

Answer 2

Answer:

$Cost \: of \: painting \: whitewashing\:Area \\=Rs \:76000$

Step-by-step explanation:

Dimensions of the Godown:

Length (l) = 50 m,

Breadth (b) = 40 m ,

Height (h) = 10 m,

$Total\:whitewashing\:area\\=Area\:of \:four\:walls +area \:of \: ceiling\\=2(l+b)h+lb\\=2(50+40)\times 10+50\times 40\\=2\times 90\times 10+2000\\=1800+2000\\=3800\:m^{2}$

Cost of painting per square metre = Rs 20 (given)

Now,

$Cost \: of \: painting \: whitewashing\:Area \\= 20\times 3800\\=Rs\:76000$

Therefore,

$Cost \: of \: painting \: whitewashing\:Area \\=Rs \:76000$

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