Question

The radius of a circle of area A and circumference C is doubled Part A Find the new area of the circle in terms of A Express your answer as a multiple of A using two significant

Answer 1

When the radius of a circle is doubled, the new area of the circle can be found by multiplying the original area by 4.

Step-by-step explanation:

When the radius of a circle is doubled, the new area of the circle can be found using the formula A = (π)(r)^2, where A is the area and r is the radius. If the original area of the circle is A, then the new area can be found by multiplying the original area by 4. Therefore, the new area is 4A.