Question

A painting 40 cm long and 28 cm wide is painted on a cardboard such that there
margin of 2 cm along each of its sides. Find the total area of the margin
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Answer 1

Answer:

Total length of the painting including the margin = 40 cm

Total width of the painting including the margin = 28 cm

Area of the painting including the margin = 40*28  

Area of the painting including the margin = 1120 sq cm

Length of the painting without the margin = 40 - (2 + 2)

= 40 - 4

= 36 cm

Width of the painting without the margin = 28 - (2 + 2)  

= 28 - 4  

= 24 cm

Area of the painting without the margin = 36*24

Area of the painting without the margin = 864 sq cm

Area of the margin = Area of the painting including the margin - Area of the painting without the margin

⇒ 1120 - 864

= 256 sq cm

So, the total area of the margin is 256 sq cm

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Answer 2

Answer:

The area of the margin is 256cm