Question

Which of the following could represent the scale factor of the smaller figure to the larger figure?

Answer 1

Answer:

It could be 2:5 or 6pi:15pi

Step-by-step explanation:

If you write the ratio of the surface area as a fraction, you would get $\frac{20\pi *yd^{2} }{125\pi *yd^{2} }$. Simplifying it would leave $\frac{4}{25}$. But this is NOT the answer because that is the ratio of the surface area. You have to square root it to find the scale factor. The square root is $\frac{2}{5}$. The answers would be 2:5 and 6pi:15pi.