## anncandy 3 years ago The perimeter of a rectangle is 10 cm, and its dimensions are tripled. What is the perimeter of the larger rectangle? 12 cm 20 cm 30 cm 10 cm

1. mathteacher1729

Do you know what the phrase "Dimensions are tripled" means? (like, can you draw a before and after picture)

2. lgbasallote

sorry for that..continue the teaching @mathteacher1729 :)

3. anncandy

It means that its tripled. I don't think i can draw it

4. mathteacher1729

What, exactly, is tripled? Not trying to be a poo-poo head, depending on how you interpret this problem, there are different answers.

5. anncandy

the perimeter of the rectangle

6. mathteacher1729

The dimensions are not the perimeter. The dimensions mean "the length and the width". So if the length is say, 4 and the width is 1, then the perimeter is 4 + 4 + 1 + 1 |dw:1341673430917:dw|

7. mathteacher1729

Now if you triple the dimensions, that means you triple the length and triple the width... 12 + 12 + 3 + 3 |dw:1341673481562:dw|

8. mathteacher1729

|dw:1341673518998:dw|

9. anncandy

Would it be 30?

10. mathteacher1729

Why do you say 30?

11. anncandy

12+12+3+3=30

12. mathteacher1729

You got it. :)

13. anncandy

Great! Thanks so much