David wants to buy a CD that regularly cost $12. The CD is Advertised as 1/4 off the regular price. Before tax, what is the cost
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So hmm notice the picture below
simply get the area of the segment, and subtract it from the area of the circle, what's left, is the difference
notice your circle, has a radius "r" of 18
simply get the area of the segment, and subtract it from the area of the circle, what's left, is the difference
notice your circle, has a radius "r" of 18