Answer:
Step-by-step explanation:
Given: The radius of circle O is r, and the radius of circle X is r'.
To prove: Circle O is similar to circle X.
Proof: Move the center of the smaller circle onto the center of the largest circle. Translate the circle X by the vector XA onto circle O. The circles now have the same center.
A dilation is needed to increase the size of circle X to coincide with the circle O. A value which when multiplied by r' will create r.
The scale factor x to increase X:
⇒
A translation followed by a dilation with scale factor will map one circle to the other, thus proving the given both circles similar.
Therefore, circle O is similar to circle X.
Step-by-step explanation:
<em>If the radius of a sphere is doubled, the surface area becomes four times the original surface area.</em>
Answer:
D is the answers for the question
Step-by-step explanation:
please mark me as brainlest
It’s A
As it says in the answer, you usually add / subtract the exponents when needed.
14:35 is a ratio, and of-coarse, as we know, we can transform that into another way of writing a ratio:
14/35
Simplify
14/7 = 2
35/7 = 5
2:5
Answer: 2 to 5