## Monday, March 2, 2009

### Week 4 - Problem 4 Figures I, II, III and IV are squares. The circumference of square I is 16m and the circumference of square II is 24m. Find the circumference of square IV.

A. 56m B. 60m C. 64m D. 72m E. 80m

1. 2. 3. 4. 5. 6. The circumference of I is 16; that means the individual sides are 16/4 which is 4.

The circumference of II is 24; that means the sides are 24/4 which is 6. So the sides of III are 10 because 6+4=10.

To find the side of IV, add the side of III and the side of II to get 10+6=16.

Therefore the circumference of IV is 16x4 = 64.

7. my answer is "c". The strategy i used to get to my answer is simple. First i calculated how long the sides of squares 1 and 2 were. After that I added the one side of each square 1 and 2 to get the side of 3 which equaled 10. Then I added the side from 2 and 3 to get the side of 4 which equaled 16. I Then multiplied 16 by 4 to get the circumference of square 4 and that equaled 64.

8. My answer is (C), 64 cm

9. The answer I got was C (64 cm)