If the volume of a sphere is 2,123 cubic cm, what is its radius in cm?

Study for the ABSA 4th Class Power Engineer Test. Explore questions with hints and explanations. Get ready to ace the exam!

To find the radius of a sphere given its volume, you can use the formula for the volume of a sphere, which is expressed as:

[ V = \frac{4}{3} \pi r^3 ]

Where ( V ) is the volume and ( r ) is the radius.

Given that the volume is 2,123 cubic centimeters, you can rearrange the formula to solve for the radius:

  1. Set the volume equal to the formula:

[ 2123 = \frac{4}{3} \pi r^3 ]

  1. To isolate ( r^3 ), multiply both sides by (\frac{3}{4\pi}):

[ r^3 = \frac{3 \times 2123}{4 \pi} ]

  1. Calculate (\frac{3 \times 2123}{4 \pi}):
  • First, calculate (3 \times 2123 = 6369).

  • Next, divide by (4 \pi) (approximating (\pi \approx 3.14)):

[ r^3 \approx \frac{6369}{4 \times 3.

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