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the length of a rectangular hall is 5m more than its breadth .The area of the hall is 750m2.Find the perimeter of the hall

## Answers

Answered by

22

Let b of hall= x

Length of hall= x+5

Area of hall= l*b

750= x2+5x

X2+5x-750=0

X2 +30 x -25x-750=0

X(x+30)-25(x+30)=0

X-25= 0

X+30=0

X =25

X=-30 (rejected)

Perimeter of hall= 2(l+b)

= 2( 30+25)

= 2 *55=110

Length of hall= x+5

Area of hall= l*b

750= x2+5x

X2+5x-750=0

X2 +30 x -25x-750=0

X(x+30)-25(x+30)=0

X-25= 0

X+30=0

X =25

X=-30 (rejected)

Perimeter of hall= 2(l+b)

= 2( 30+25)

= 2 *55=110

Answered by

9

Answer: Perimeter of hall is 110 m.

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