A rectangle having the perimeter of $20 m$ is converted into a square. Find the money required to paint the complete area of the square if the cost involved for painting is $20 p a i s a p e r c m^{2}$ .

Rs.50000

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Rs.500

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Rs.5000

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Rs.50

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Solution

The correct option is A
Rs.50000

Perimeter of a square of side length $a = 4 a$
$4 a = 20$
$a = 5$
area of the square $= a^{2}$
$= 25 m^{2}$
Cost involved in painting $= 20 p a i s a p e r c m^{2}$
Which is equivalent to $R s . 2000 p e r m^{2}$
Cost involved in painting $= R s . 2000 p e r m^{2}$
Cost involved in painting the complete area $= 25 \times 2000$

$= R s . 50000$

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A rectangle having the perimeter of 20m is converted into a square. Find the money required to paint the complete area of the square if the cost involved for painting is 20 paisa per cm2.

A rectangle having the perimeter of $20 m$ is converted into a square. Find the money required to paint the complete area of the square if the cost involved for painting is $20 p a i s a p e r c m^{2}$ .