Answer:

9. If the radius is doubled, what happens to the diameter of the circle.

A The diameter is also doubled

B. The diameter remains the same

C. The diameter is increased by 2

D. The diameter will be the same as the radius

Step-by-step explanation:

hope it helps

Answer:

A.

when the diameter double the radius also get doubled. so the area of the resultant circle is increased by four times.