room is 5.5 metre long 4 metre wide and 3.5 metre height find the cost of papering it's wall with papers 90 metre wide at rupees 120 per metre
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Answer:
Rs 88.67.
Step-by-step explanation:
The room has
Two walls at 5.5x3.5, or 2(19.25), or 38.50 m2.
Two walls at 4x3.5, or 2(14), or 28 m2.
The room has 66.50 m2 of wall space.
The amount of paper needed is 66.50 / 0.9 (90 cm = 0.9 m)
66.50 / 0.9 = 73.8888
The cost of the paper is 1.20 · 73.89.
The cost of the paper is
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