Question

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

Answer 1

first comvert them to meters
70cm =0.7 m
then area =lb
=1(0.7)
=0.7sqm


cost =80(0.7)rupees

Answer 2

Area of rectangular piece = 1×(70÷100)
=0.7 sq.m
total cost = rate ×area
= 80×0.7
=56
Hence total cost is Rs 56