SAT Collegeboard Blue Book help

Test Preparation
1

<p>Naomi makes silver jewlery. For one style of earrings, she cuts wedges from a silver disk, as shown above. Each wedge makes a 40 degree angle at the center of the disk. If the weight of each uncut disk is uniformly distributed 2.5 grams, how many does each wedge weigh?</p>

<p>Collegeboard Blue Book page 720 #14.</p>

<p>I was working on this problem for a good 20 minutes after I finished the practice test and still can’t get it. Can anyone explain this question?</p>

<p>Thanks a lot guys</p>

2

<p>40° of a circle = 1/9 of a circle. 1 circle = 2.5 grams…</p>

<p>[1/9 circle][2.5 g/circle] = 5/18 g</p>

3

<p>WOW. Carless mistake. I divided by 8 instead of 9…WOW. Thanks bro</p>

4

<p>■■■■■ nub ur def not getting a 2400</p>

5

<p>I did the same mistake :smiley: (1/8)</p>