Question

The length of a rectangle is 5cm less than twice the breadth. If the perimeter is 50m. Find the length and breadth?​

Answer 1

Answer 》》》》》♡♡♡

Let the breadth of a rectangle be x cm.

Therefore, length will be 2x−5 cm.

Now, length is decreased by 5 cm i.e., 2x−5−5=2x−10 cm and breadth is increased by 2 cm, i.e., x+2 cm.

Also given, perimeter =74=2(l+b) cm.

Therefore, 2[2x−10+x+2]=74

⇒2[3x−8]=74

⇒6x−16=74

⇒6x=74+16

⇒6x=90

⇒x=15

Now, length will be =2x−5=2(15)−5=30−5=25 cm.

Therefore, length and breadth of a rectangle are 25 cm and 15 cm respectively

Answer 2

Answer:

Let the breadth be x

so length will be 2x-5

Now perimeter given equal to 50m

2(l+b)=50

2(2x-5+x)=50

2(3x-5)=50

3x-5=50/2

3x-5=25

3x=25+5

3x=30

x=30/3

x=10m

2x-5=20-5=15m

Hence length and breadth are 15m and 10m respectively ☺☺☺☺