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Area of Rectangle

A rectangular...

Question

A rectangular piece of plastic sheet measures 1 m by 70 cm. Find its cost at the rate of Rs.80 per square metre.

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Solution

Length of Rectangular sheet $1 m$
Breadth of Rectangular sheet $0.7 m$
Area of rectangular sheet $1 \times 0.7 = 0.7 m^{2}$
Cost of $1 m^{2}$ is $R s .80$
Cost of $0.7 m^{2}$ is $R s .80 \times 0.7 56 R s .$

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