Question

If the perimeter of a rectangle is 18cm and its area is 18 sq. cm,
Write the equation to denote the area of the rectangle.

Answer 1

Answer:

l=3cm or 6cm b=3cm or 6cm

Step-by-step explanation:

Perimeter=2(l+b)

18=2(l+b)

l+b=9

l=9-b

Area= l×b

18=(9-b)×b

b^2-9b+18=0

b^2-6b-3b+18=0

b(b-6)-3(b-6)=0

(b-3)=0 or (b-6)=0

b=3 or b=6

IF b=3cm

Then l=3cm

IF b=6cm

Then l=6cm

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