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

Laura Lamb

Mathematics

6 February, 10:09

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

+3

Answers (1)

Know the Answer?

Dorian Woodard · Answer 1

Example

from pir^2 ro pi (2r) ^2

pi (2r) ^2=pi4r^2=4pir^2

basicaly we look for any no options and ones where second is 4 times first

B

pi2^2, if it is double, pi4^2

B

When the radius doubles, does the area of the circle double?A) 4π cm2; 8π cm2; NOB) 4π cm2; 16π cm2; NOC) 4π cm2; 16π cm2; YESD) 4π cm2; 8π cm2; YES

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