A current institution question and answer asked students to declare what they believe is the main important thing for a student to do in order for you to gain success. From the numerous responses, one that that stood out was practice. Persons who ordinarily are successful do not become successful by being born. They work hard and dedication their lives to succeeding. This is how you can attain your goals. beneath are one of the answer and question example that you can work with to practice and expand your understanding and also give you insights that might assist you to keep up your study in school.

## Question:

For her fitness class, Ana bought a stability ball that has a volume of 4,500π cubic inches. Fredrick is taking the same fitness class and needs a stability ball that is congruent to Ana’s because he is the same height. What must the diameter of Fredrick’s stability ball be for it to be congruent to Ana’s?

## Answer:

**Answer:**

30 inches

**Step-by-step explanation:**

As, the stability ball of Ana is congruent to the stability ball of Fredrick. This implies that the volume of both the balls will be same.

So, Volume of Ana’s ball = Volume of Fredrick’s ball = 4500 .

**Now, the volume of a sphere is given by , where ‘r’ is the radius.**

Substituting the value of the volume in this formula, we will obtain the radius.

i.e.

i.e.

i.e. r = 15 inches

**As, diameter is the double of the radius.**

So, diameter = 2×radius = 2×15 = 30 inches.

Hence, the diameter of Fredrick’s ball the 30 inches.

From the answer and question examples above, hopefully, they could simply assist the student resolve the question they had been looking for and take note of everything that declared in the answer above. You will possibly then have a discussion with your classmate and continue the school learning by studying the subject to one another.