The cost of flooring a rectangular hall at * 64 per square metre is * 2,048. If the breadth of
the hall is 5 m, find :
(i) its length
(ii) its perimeter
(iii) cost of fixing a border of very small width along its boundary at the rate of 60 per
metre.
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Answer:
Cost of flooring =Rs64
Total cost of flooring =Rs2048
Breadth =5m
⇒
(a) l×b×64=2048
l×5×64=2048
l=
5
32
=6.4m
(b) perimeter = 2(l+b)=2(6.4+5)
=2(11.4)=22.8m
(c) cost of fixing border ⇒ Area of hall× Rs 60m
=Rs60×32
=Rs1920
Step-by-step explanation:
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