Question

The length of a rectangle exceeds its breadth by 5 cm. If the breadth and the length are decreased
by 10%, what will be the percentage change in its perimeter?

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Answer 1

Answer:Let the breadth of the rectangle be x cm.

Therefore, length =x+7 cm

According to the question,

(x+3)(x+3)=x(x+7)

x2+9+6x=x2+7x

x=9

Hence, dimensions of original rectangle,

Length = 16 cm

Breadth = 9 cm

Step-by-step explanation: