Answer:
2 pie r is the measure of its circumference.
The scale factor is 2, you find this answer by finding the number that multiplys with the smaller number in order to equal larger one
Answer:

Step-by-step explanation:
Given: 
Solution:
A differential equation is said to be separable if it can be written separately as functions of two variables.
Given equation is separable.
We can write this equation as follows:

On integrating both sides, we get

Formulae Used:

So, we get solution as 
Applying condition: x(0) = 1, we get 
Therefore, 