Question

rectangle has a perimeter of 10 cm if its sides are doubled with how many times will its area increases​

Answer 1

Answer: we get the new perimeter of rectangle

if its sides are doubled 20  times will its area increases​

Step-by-step explanation:

Let sides be l,b

2(l+b)=10

Now consider the new sides are 2l,2b

2(2l+2b)

New Perimeter = 2×Perimeter

2(10)=20cm

Thus we get the new perimeter of rectangle is 20cm

if its sides are doubled 20  times will its area increases​