What are 10 equivalent expressions?

Step-by-step explanation:

1+9

2+8

3+7

4+6

5+5

6+4

7+3

8+2

9+1

10+0

1/800 is the right answer

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi