A group of workers can plant 21 acres in 7 days.
What is their rate in acres per day?

3

Step-by-step explanation:

21 acres divided by 7 days equals to 3 days

Each day they do 3 acres

3 acres * 7 days = 21 acres in a week

I think 3 acers in a day. if you need an explanation pls let me know :)

the first one

step-by-step explanation:

just id the test.

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