Question

If the volume of the crystal ball is about 113.14 cm3, the radius of the ball is approximately

Answer 1

Answer:

r ≅ 3.00

Step-by-step explanation:

First we need to get the formula for finding the volume of sphere. The formula  is:

$V=\frac{4}{3}\pi r^{3}$

Now to find for the radius, we need to input the value that we know into the formula.

$113.14=\frac{4}{3}\pi r^{3}$

Now we multiply both sides by 3/4.

$\frac{3}{4}x113.14=\frac{4}{3}\pi r^{3}$

$84.86=\pi r^{3}$

Now divide both sides by π.

$\frac{84.86}{\pi}=\frac{\pi r^{3}}{\pi}$

$27.01=r^{3}$

To find r, we finally get the cube root of both sides.

$\sqrt[3]{r^{3} }= \sqrt[3]{27.01}$

r ≅ 3.00

Answer 2

Answer:

B and B for plato

Step-by-step explanation: