Question

The area of a rectangle is the same as that of a square of side 16 m. If the length of the rectangle
is 32 m, find its perimeter.
8. A picture is painted on a cardboard 8 cm long and 5 cm wide such that there is a margin of
15 cm along each of its sides. Find the total area of the margin. please ans​

Answer 1

7.answer

anewer 8.ANSWER

Length of painted cardboard=8 cm and breadth of painted card =5cm

Since, there is a margin of 1.5cm long from each of its side.

Therefore reduced length

=8−(1.5+1.5)=8−3=5cm

And reduced breadth

=5−(1.5+1.5)=5−3=2cm

∴ Area of margin=Area of cardboard(ABCD)−Area of cardboard(EFGH)

=(AB×AD)−(EF×EH)

=(8×5)−(5×2)

=40−10

=30cm

2

Thus, the total area of margin is 30cm

2

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