SAT Math Practice Question #33714 - SATify | SATify

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SAT Math Practice Question #33714 - SATify | SATify

#33714

circles

area

geometry

hard

90 sec

The area of circle M is $25$ times the area of circle N. If the radius of circle N is $r$ , what is the radius of circle M in terms of $r$ ?

A.

$5 r$

B.

$10 r$

C.

$25 r$

D.

$50 r$