Question

A picture is painted on a cardboard 8 cm long and 5 cm wide such that there is a margin of 1.5 cm along each of its sides. Find the total area of the margin
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Answer 1

Answer:

30 cm

Step-by-step explanation:

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Answer 2

Answer:

AREA OF MARGIN is 30cm²

Step-by-step explanation:

using formula,

$area \: of \: rectangle = length \times bredth$

For a cardboard,

length = 8cm,

breadth = 5cm

Area of cardboard = 8cm X 5cm = 40cm²

For a cardboard with margin,

length = 8cm - 1.5cm - 1.5cm = 5cm,

breadth = 5cm - 1.5cm - 1.5cm = 2 cm

Area of cardboard with margin = 5cm X 2cm = 10cm²

AREA OF MARGIN

= AREA OF CARDBOARD WITH MARGIN - AREA OF CARDBOARD

AREA OF MARGIN = 40cm² - 10cm²

AREA OF MARGIN = 30cm²