A figure has been shrunk from center O with a scale factor r = 0.25. What scale factor would enlarge the figure back to the original size? r =

To find the scale factor for a dilation, we find the center point of dilation and measure the distance from this center point to a point on the preimage and also the distance from the center point to a point on the image. The ratio of these distances gives us the scale factor, as Math Bits Notebook accurately states.

Step-by-step explanation:

if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

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40 x 50 = 2000

step-by-step explanation: