Question

the perimeter of rectangle is 90cm and its lengthbis 25cm. what is the breadth of the rectangle​

Answer 1

Answer:

perimeter =90cm

length is 25cm

p=2[l+b]

90cm=2[25+b]

90cm=50cm+2b

2b=90-50=40

2b=40

breadth=40/2=20

Therefore Breadth is 20cm

Answer 2

Answer:

let breadth is=x

perimetre =2( l+b)

90cm =2(25+x)

90cm =50+2x

90cm-50cm=2x

40cm=2x

x=40/2

x=20cm