Question

3. If you double the length of a given rectangle, its perimeter increases by 20 units. What is the
value of its length?​

Answer 1

Answer:

10 units

Step-by-step explanation:

let length be L and breadth be B

2L+2B=X (perimeter)

4L+2B=2L+2B+20

2L=20

Thus, L=10 units

Answer 2

Answer:

10 units

Step-by-step explanation:

10 unit answers