Question

the perimeter of a rectangle is 42 cm and it length is 10 cm. find its breath​

Answer 1

Answer:

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Step-by-step explanation:

perimeter = 42

2(lb) = 42

10*b = 42

b  = 4.2cm

Answer 2

The breadth of a rectangle is "11 cm".

Step-by-step explanation:

$The \ given \ values\ are:\\The \ perimeter \ of \ a \ rectangle,P=42 \ cm\\The \ length, L=10 \ cm\\As \ we \ know,\\The \ perimeter \ of \ a\ rectangle, P=2(L+B)\\On \ putting \ the \ values \ in\ the \ above \ formula,we \ get\\42=2(10+B)\\\frac{42}{2}=10+B\\ 21=10+B\\B=21-10\\B=11 \ cm$

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