Question

a rectangular piece of plastic sheet measures 65cm by 40cm find its cost of rupees 20 per square meter

Answer 1

area of sheet=65*40
2600cm^2
=0.26m^2
cost=2.6*20=5.2rs

Answer 2

dimensions of plastic sheet = 65×40 cm
area of plastic sheet = L×B=65×40=2600cm sq

1 m sq = 10000 cm sq

so 2600 cm = 0.26 m sq

cost of 1 m sq = 20 rs
cost of 0.26 m sq = 0.26×20= 5.20 rs

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