Question

A picture is painted on a cardboard 8cm long and 5cm wide such that there is a margin of 1.5 cm along each of its side . Find the total amount of the margin

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Answer 1

total margin = (8X5)-(8-1.5-1.5)(5-1.5-1.5)

=> 40-5X2

=>40-10

=>30 cm²