Question
If a tennis ball has a diameter of 4.8, calculate the volume of the tennis ball. Use 3.14 for pi. Round to the nearest whole number (the ones place).
- 57
- 60
- 17
- 19
Hint:
Here, we want to find the volume of a tennis ball whose diameter is given. Now, we know that a tennis ball is sphere-shaped and the volume of a sphere of diameter is given by the formula, .
The correct answer is: 57
Given that the diameter of the tennis ball is .
We have to find the volume of this sphere-shaped tennis ball.
We know that the volume of a sphere of diameter is ..
So, for , we get (put ): .
Therefore, the volume of the given tennis ball is approximately, .
Note that the value of is taken as which is an approximate value of . Though it is not exact, we can use this to find the value of a mathematical expression. We can take the value of as also.
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