Is the 2 an exponent? if so, it is always an even integer.
C = 2 pi r
Since it is traveling around the circle 3 times we will use:
2 * 3 * 3.14 * 80
Total distance traveled = 1507.2 ft
She can arrange them in the following;
1 row of 36
2 rows of 18 (doesnt count because it says other and this has already been mentioned)
3 rows of 12
4 rows of 9 (doesnt count because it says other and this has already been mentioned)
6 rows of 6
It is a right triangle. If it contains the 90°, it is definitely a right triangle.