Question

Find the length of rectangle whose perimeter is 164 &breath is 20 cm​

Answer 1

Perimeter=2(L+b)

Perimeter=164 cm,Breadth=20cm

=>164=2(L+20)

=164=2L+40

=>164-40=2L

144=2×L

L=144÷2

L=72

Answer 2

The length of a rectangle is "62 cm".

Step-by-step explanation:

$The \ given \ values \ are:\\The \ perimeter \ of \ a \ rectangle \ =164 \ cm\\The \ breadth,B =20 \ cm\\As \ we \ know,\\The \ perimeter \ of \ a \ rectangle ,P=2(L+B)\\On \ putting \ the \ values \ in \ the \ above \ formula,we \ get\\164=2(L+20)\\\frac{164}{2}=L+20\\ 82=L+20\\L=82-20\\L=62 \ cm$

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