【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.

2 e1 d" W( T% M5 V3 _A right circular cylinder has height and volume . What is the circumference of its base?

9 n( E" j3 ~# S5 Y
5 L2 F" P+ }3 Y
, f* T9 K4 z1 n
$ e: k% A4 U) Y& _
) o$ D7 i* ^6 p' @* b% L. LA.  
% e' f9 \  y0 ?9 \) |; J- m! J
B.  
, H2 G' ^( r1 g$ h8 f/ @
( M8 U6 M6 \# W9 S1 _/ N8 NC.  

D.  
0 |6 D4 l8 o/ z. w
# ^3 S) i, x: q$ N# WE.  

正确答案:C

# @: l& [# T5 p/ L; y解析:
* |/ r$ O$ t" l! \4 `1 b5 \
The 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 .

+ Z; v; D- u0 ~5 \+ ~% p  A
$ A5 l' r' W/ Y
+ J1 p5 l+ l4 q' t