A Rectangular piece of plastic sheet measures 1 m by 70 cm. Find its cost at the rate of ₹ 80 per square metre.
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Answer:
area of rectangle= l×b
1m=100cm
area of rectangle will be= 1×0.70
=0.70m²
cost of 1m²=Rs.80
so, cost of 0.70m² will be 0.70×80
ans. is Rs.56
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