Question

the length of a rectangle is 7 cm more than its breadth if the perimeter of the rectangle is 90 cm find its length and breadth full explanation solving answer branch please​

Answer 1

Answer:

length is 26cm and breadth is 19cm

Step-by-step explanation:

let the breadth will be x

then the length is x+7

perimeter 2(l×b)

2(l×b)=90cm

2(x+x+7)=90cm

2(2x+7)=90cm

2x+7=90/2

2x+7=45

2x=45-7

2x=38

x=38/2

x=19

therefore breadth is 19cm

and length is 19+7cm=26cm

Answer 2

Answer:

length=7+breadth.....................(1)

perimeter=90cm

2(length+breadth)= perimeter

2(7+breadth+breadth)=90.........(from 1)

2(7+2*breadth)=90

7+2*breadth=90/2

7+2*breadth=45

2*breadth=45-7

2*breadth=38

breadth=38/2

breadth=19cm.......................(2)

length=7+breadth..............(from 1)

length=7+19.....................(from 2)

length=26cm