Question

the length of a rectangle is 7cm more than its breadth.perimeter=90cm.find length and breadth​

Answer 1

1. let the breath is x
2. let the breath is x then
3. let the breath is x then length is x+7
4. let the breath is x then length is x+7perimeter of rect.= 2(l+b)
5. let the breath is x then length is x+7perimeter of rect.= 2(l+b)
6. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90
7. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 90
8. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=45
9. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=452x= 45-7
10. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=452x= 45-72x= 38
11. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=452x= 45-72x= 38 x= 19
12. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=452x= 45-72x= 38 x= 19 then breath = 19
13. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=452x= 45-72x= 38 x= 19 then breath = 19 and length = x+7= 19+7= 26
14. let the breath is x then length is x+7perimeter of rect.= 2(l+b) then 2(l+b)= 90= 2(x+x+7)= 902x+7=452x= 45-72x= 38 x= 19 then breath = 19 and length = x+7= 19+7= 26i hope it will healp you. mark me as brainlist.

Answer 2

Answer:

Let the breadth of rectangle be x

then. length=x +7

perimeter of rectangle =90

2(l + b) =90

2(7+x+x)=90

7+x+x=90÷2

7+2x=45

2x=45-7

x=38÷2

x=19

breadth=19

leanth=19+7=26