Finding the Dimensions of a Rectangle with known Perimeter

Q. The width of a rectangle is $10$ cm less than the length. If the perimeter of the rectangle is $80$ cm, then find the dimensions of the rectangle?

1. $\text{length = 25 cm, width = 15 cm}$
2. $\text{length = 30 cm, width = 20 cm}$
3. $\text{length = 15 cm, width = 25 cm}$
4. $\text{length = 20 cm, width = 30 cm}$

Q. If a rectangle has a perimeter of 40 meters, then the relation between its length and width is:

1. $\text{length + width}=20$
2. $\text{length + width}=200$
3. $\text{length + width}=10$
4. $\text{length + width}=40$

Q. The perimeter of a rectangular pool is 50 m. If the pool is 15 m long, then the width of the pool is:

1. $12m$
2. $10m$
3. $15m$
4. $5m$

Q. The perimeter of a rectangle is $40$ cm and if one of the side has a length of $8$ cm, then the length of the other side (in cm) is:

1. 12

Q. The perimeter of a rectangle is $20$ units. If the length of any one of the sides is $6$ units, the length of the other side is .

1. $4$ units
2. $6$ units
3. $8$ units

Q. A wire is in the shape of a square of side 5 m. It is later transformed into a rectangle(by bending) having a length of 7 m. Find the width of the rectangle?
m