Ella sold 37 necklaces for $20 each at the craft fair. she is going to donate half of the money she earned to charity. use commutative property to mentally find out how much she will donate.

Ella will sell $370.

Step-by-step explanation:

If you multiply 37 and 20 you get 740 and divide that by 2 and you get 370.

Ella is going to donate $370.

Step-by-step explanation:

With the Commutative Property, you can do 1/2 times $20 times 37. So, 1/2 times $20 is $10. Now, you can easily do $10 times 37 equal $370.

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees