Question

the perimeter of a rectangle is 100 cm if its width is 15 CM then the length of a rectangle will be​

Answer 1

Step-by-step explanation:

Let length=l, breadth=b of rectangle

⇒ Perimeter=2(l+b)

⇒100=2(35+b)

⇒50=35+b

⇒b=15cm

Area=lb=35×15=525cm2

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Answer 2

Perimeter of rectangle = 2(l+b)

100cm = 2(l+15)

100 = 2l+30

-30+100= 2l

70 = 2l

70/2=l

l = 35

HOPE IT HELPS YOU.