Mathematics
Grade-8
Easy

Question

Jason wanted to know how much ice cream he got in one scoop. The radius of a scoop is 3 inches. Find the volume. Use 3.14 for pi.

  1. 100.3 in³
  2. 120.5 in³
  3. 113.1 in³
  4. 50.2 in³

hintHint:

Here, in this problem, we are to find the quantity of ice cream that Jason got in one scoop. For this, we have to calculate the volume of the given scoop whose radius is given. Now, a scoop is sphere shaped. So, we can use the formula for calculating the volume of a sphere. The volume V of sphere of radius r is given by the formula, V equals 4 over 3 πr cubed.

The correct answer is: 113.1 in³


    Given that the radius of the scoop is r equals 3 inches.
    We have to find the quantity of ice cream that Jason got in one scoop and For this, we have to calculate the volume of the given sphere-shaped scoop.
    We know that the volume V of a sphere of radius  is V equals 4 over 3 πr cubed.
    So, for r equals 3 inches, we get (put straight pi equals 3.14): V equals 4 over 3 cross times 3.14 cross times 3 cubed equals 113.04 space text in end text cubed.
    Therefore, Jason got 113.04 space text in end text cubed ice cream in one scoop.

    Note that the value of straight pi is taken as 3.14 which is an approximate value of straight pi. Though it is not exact, we can use this to find the value of a mathematical expression. We can take the value of straight pi as 22 over 7 also.

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