A railroad crew can replace 450 meters of rails in 3 days how many kilometers of rail can they repair in 24 days?

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

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

your answer is  

d.

196.5 m2

step-by-step explanation:

2y+y=5

add 2y and y