Pls help I don’t get any of them

Step-by-step explanation:

28.   Area of the circle = π where r is the radius of the circle.

       Given diameter = 14m, therefore radius = = 7m

       Now area of the circle = 49 or = 49 * 3.14 * 3.14 = 483.12

29. Volume of cylinder = πh = π* * 3 = 6.75π cu. feet or 21.195 cu. feet

30. A ball resembles a sphere. Volume of the sphere =

      Given diameter = 30inches; Therefore, radius = 15 inches

 Now, Volume of the ball = = 4500π cu. inches or 14310 cu.inches

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

no solution

step-by-step explanation:

there is not enough information in the problem to solve.