Grid In

What is the area of half of a circle with a radius of 6? 

Grin In

What is the length of a 90 degree arc if the circle's radius is 12?

A square has an area of 64. A circle on the inside of it intersects with the square exactly 4 times at the midpoints of the square's sides. What is the circumference of the circle? round to the closest whole number.

1. 25
2. 26
3. 23
4. 24

1. 25

Two identical circles intersect at exactly one point. Their radius is 3. what is the distance from the center of one circle to the next?

1. 6
2. 2
3. 3
4. 4

1. 6

How many degrees are in a circle?

1. 360
2. 7
3. 24
4. 240
5. 270
6. 420
7. 800
8. 99999
9. 96
10. 12