【SAT官方每日一题】13/8/12 Mathematics > Standard Multiple Choice

滚吧肥汤圆UID: 3272378

Read the following SAT test question and then click on a button to select your answer.

  B# Y) ~6 B0 q& `  \- t+ x" dA right circular cylinder has height and volume . What is the circumference of its base?

9 G4 n8 f* c/ g/ w; u  I% C7 d


2 Z, S8 g; \9 ?4 X( q
  Z- l6 M/ P% M( N" }A.  

B.  
2 Z6 r2 C" J8 `, S0 e8 ^1 Z
9 P+ U' E5 c% a" ]2 UC.  

; i6 `4 S* r( W; S" E) `! C- M3 bD.  
" a. G* m  x, f5 C
6 d0 z! \! p# b1 `$ n/ ?: NE.  

正确答案:C

解析:
; w- B, S) G( {0 L+ V3 g% k
* e& \- ~) a$ W: D% H' R+ E0 xThe volume of a cylinder with radius   and height   is equal to  . Therefore，  and , so the radius of the cylinder is . The circumference of a circle with radius   is equal to  ; therefore, the circumference of the base is equal to .