Question

A rectangle has a width of 5 cm and a length of 10 cm. If the width is increased by 3, how does the perimeter change?

Answer 1

Answer:

The perimeter changed by 6 cm.

Step-by-step explanation:

A rectangle has a width of 5 cm and a length of 10 cm.

The perimeter is = 2(length+width)

Perimeter = $2(10+5)$

= $2(15)$

= 30 cm

When the width is increased by 3, and lets assume that the length is same .

So, length is 10 cm and width is 8 cm.

Perimeter =  $2(10+8)$

= $2(18)$

= 36 cm

Change in perimeter =$36-30=6$ cm

So, the perimeter changed by 6 cm.

Answer 2

Answer:

The new perimeter would be 36cm.

Step-by-step explanation:

The perimeter would change because you add 3 to two sides, because the perimeter originally was 5+5+10+10. Now, it's (5+3)+(5+3)+10+10. Which is 36.