<p>Sat test 2
i don't get the following math questions, can any1 help?
section 3: 19
Section 6: 17, 18</p>
<p>thnxs =]</p>
<p>3:19
30/360=1/12 so you know you're dealing with 1/12th of the entire circle
Circumference = 2<em>pi</em>radius
You know 1/12th of the the Circumference is 6pi, so (2<em>pi</em>r)/12=6pi
Solve for r and you get 36
Area of sector is (pi*r^2)/12 -> 1296pi/12 ->108pi</p>
<p>6:17
-One type A clock will chime 8 times at 8:00, 1 time at 7:30, and 1 time at 8:30 for a total of 10 chimes during the time period
-One type B clock will chime 8 times at 8:00 for a total of 8 chimes during the time period
-One type C clock will chime 1 time at 8:00, 1 time at 7:30, and 1 time at 8:30 for a total of 3 chimes during the time period</p>
<p>10 A clocks...10<em>10=100
5 B clocks...5</em>8=40
3 C clocks...3*3=9
Answer is the sum:149</p>
<p>6:18
You can arrange the four cards in 4! ways
4!=4<em>3</em>2<em>1=24
The grey card can be in any of the 3 inside positions
24</em>3=72</p>