Question

The area of a rectangular field is p 2 − 5p + 4.If its length is p−4. Then find its breadth.

Answer 1

Answer:

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Answer 2

Given : Rectangle length =(5p−6) m, width =(p+4) m and perimeter is 20 m.

We know that, perimeter of rectangle =2(length×breadth)

Then perimeter of rectangle =2[(5p−6)+(p+4)]=2(5p−6+p+4)=2(6p−2)

But given perimeter is 20 cm

∴2(6p−2)=20

⇒6p−2=10

⇒6p=10+2=12

⇒p=2

So width =(p+4)=2+4=6 m

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