The names of the students in mr. hayes math class are written on the board. mr. hayes writes each name on an index card and shuffles the cards. each day he randomly draws a card, and the chosen student explains a math problem at the board. what is the probability that ryan is chosen today? (there are 20 kids in his class.)

452,489 to the nearest thousand is 452,000

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