https://www.usatestprep.com/modules/gallery/files/4/477/477.png
B? Calculate the area of a circle with a radius of 2 cm and a circle with a radius of 4 cm. Leave your answers in terms of pi.

When the radius doubles, does the area of the circle double?
A) 4π cm2; 8π cm2; NO
B) 4π cm2; 16π cm2; NO
C) 4π cm2; 16π cm2; YES
D) 4π cm2; 8π cm2; YES

Question

https://www.usatestprep.com/modules/gallery/files/4/477/477.png
B? Calculate the area of a circle with a radius of 2 cm and a circle with a radius of 4 cm. Leave your answers in terms of pi.

When the radius doubles, does the area of the circle double?
 A) 4π cm2; 8π cm2; NO 
 B) 4π cm2; 16π cm2; NO 
 C) 4π cm2; 16π cm2; YES 
 D) 4π cm2; 8π cm2; YES

Hero · Answer

@shasha12 have you done this yet? If so, what were your results? (please do not guess). Instead provide the actual work you did to come up with your results.

shasha12 · Answer

No, I haven't done the formula yet

Hero · Answer

Exactly what is it that is stopping you?

shasha12 · Answer

I don't know howto do the formula

Hero · Answer

What do you mean? What is the formula?

Hero · Answer

@shasha12