Question

the length of a rectangle is 20 CM more than its breadth if the perimeter is 100 centimetre find the dimension of the rectangle ?​

Answer 1

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$\to$ Breadth = 15 cm

$\to$ Length = 35 cm

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Let ,

The breadth of a rectangle = x

So , length = 20 + x

Given ,

$\to$ Perimeter of the given rectangle is 100 cm

$\sf \to 2(length+breadth) = 100</p><p> \\ \\ </p><p> \sf \to 2( x +20+x )=100 </p><p></p><p> \\ \\ \sf \to 2x+20=\frac{100}{2}</p><p></p><p> \\ \\ \sf \to 2x= 50 -20</p><p></p><p> \\ \\ \sf \to 2x= 30</p><p></p><p> \\ \\ \sf \to x= \frac{30}{2}</p><p> \\ \\ \sf \to x = 15 \: cm$

Therefore , dimensions of the rectangle :

$\to \sf Breadth = 15 \: cm \\ \\ </p><p> \sf \to</p><p>Length = 15 + 20 = 35 \: cm </p><p>$