Question

If the length of a rectangle is 5 cm more than the breadth and the perimeter of the rectangle is 40 cm.find the length ajd breadth

Answer 1

Let the breadth be x
Length= (x+5)cm
Perimeter=40cm
Perimeter= 2(l+b)
40= 2{(x+5)+(x)}
40=2x+10+2x
40=4x+10
4x=40-10
4x =30
x=30÷4
x =7.5
Breadth=7.5cm
Length= 7.5+5= 12.5cm


Hope I helped u
Pls mark it as brainliest.☺

Answer 2

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

${ \underline {\huge {\sf {\blue{Correct \: Question : - }}}}}$

The length of a rectangle is 5cm more than its breadth.If the perimeter of the rectangle is 70cm.Find its length and breadth.

${ \underline {\huge {\sf {\blue{Solution : - }}}}}$

$\large \purple \leadsto$Let the breadth of rectangle be x cm.

$\large \purple \leadsto$Then its length = x + 5 cm

$\large \purple \leadsto$Perimeter = 2 (Length + Breadth)

$\large\pink\leadsto$70 = 2 (x + (x+5)

$\large\pink\leadsto$$\sf{ \frac{70}{2} }$ =2x + 5

$\large\pink\leadsto$2x + 5 = 35

$\large\pink\leadsto$2x = 35 - 5 = 30

$\large\pink\leadsto$x = $\sf{ \frac{30}{2} = 15cm}$

$\large \purple \leadsto$Breadth = x = 15cm.

Length = x + 5 = 15 + 5 = 20cm

▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁