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.

Given

From the given data we get to know that

Length of the cardboard (L) = 8 cm

Breadth of the cardboard (B) = 5 cm

Find out

We have to determine the total area of the margin.

Solution

Area of the cardboard = length × breadth

= 8 × 5

= 40 cm2

From the figure,

The new length and breadth of the cardboard when the margin is not included are 5 cm and 2 cm.

The new area of the cardboard = 5 × 2

= 10 cm2

The area of margin = Area of the cardboard when the margin is including – Area of the

cardboard when the margin is not including

= 40 – 10

= 30 cm2

Answer

Are of the margin=30 cm2

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