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labwork [276]
3 years ago
8

Sphere A has a diameter of 12 and is dilated by a scale factor of one half to create sphere B. What is the ratio of the volume o

f sphere A to sphere B?
Mathematics
1 answer:
Mrac [35]3 years ago
4 0

Answer:

VA/VB = 8

Step-by-step explanation:

You have a sphere A with diameter 12, that is, radius 6, which can be written as follow:

V_A=\frac{4}{3}\pi r_A^3=\frac{4}{3}\pi (6)^3=288\pi             (1)

The sphere A is dilated by a scale factor of one half to sphere B. Then, you have:

V_B=\frac{4}{3}\pi r_B^3=\frac{4}{3}\pi (\frac{6}{2})^3=36\pi       (2)

From the results of equation (2) and (1) you can calculate the ratio VA/VB:

\frac{V_A}{V_B}=\frac{288\pi}{36\pi}=8

The ratio of the volumes of both sphere A and B is 8

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