Question
If the radius of a sphere is doubled, the area of the sphere is multiplied by and the volume is multiplied by
Step 1
If the radius is doubled, the new area $A'$ is given by $A' = 4\pi (2r)^2 = 4\pi \cdot 4r^2 = 4A$. So, the area of the sphere is multiplied by 4. Show more…
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