Question

The length of a rectangle is 15 cm more than its width. The perimeter is 150 cm. Find the
dimensions of the rectangle.

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Answer 1

Step-by-step explanation:

given that:

l=15+bcm

perimeter of rectangle=150cm

formula:

perimeter of rectangle=2(l+b)

150=2(15+b+b)

150=2(15+2b)

150=30+4b

150-30=4b

120=4b

b=120/4

therefore b=30

Answer 2

Solution__

Let the breadth=x

the length =x+15

given perimeter=150

we know

Perimeter of rectangle=2(l+b)

150 = 2( x+ x+15)

75=2x+15

60=2x

30=x

therefore breadth =30 cm

length =30+15=45 cm

check

150=2(45+30)

150=2(75)

150=150

LHS=RHS

hence proved.

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