Question

the length of a rectangle is 18cm more than it's breadth if the perimeter is 84cm find the length and breadth​

Answer 1

Step-by-step explanation:

Length = l

Breadth = b

l=18+b

Perimeter = 2(l+b)

84=2(18+b+b)

84/2=18+2b

42-18=2b

24/2=b

12=b

l=18+12

=30

Length =30cm

Breadth =12cm

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Answer 2

GIVEN--> length=18 cm

                perimeter=84 cm

TO FIND--> breadth

SOLUTION:--

We know that,

perimeter of rectangle = 2(length=breadth)

=>84=2(18+breadth)

=>84/2=18+breadth

=>42-18=breadth

=>Breadth= 26 cm

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