What I learned after watching the video was that I learned the formula of how to find the area of only part of a circle. It is the area equals the measure of the arc that is part of your sector over three hundred sixty multiplied by pie times radius squared. For example, if the measure of the arc is thirty five and the radius equals eight, your equation is area equals thirty five over three hundred sixty times pie times eight squared or sixty four. So, the area of the small sector of the circle equals 19.54. If you wanted to find the large sector you would minus 360 minus 65 or 325. You do the same thing, but instead of using 35, you use 325 and your answer is 181.54. This is everything that I learned about after watching the video.
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I commented on Cheyanne Schleis's blog and Rebecca Phipps's blog.
ok so for your first problem, we have to take the larger rectangle and subtract the smaller retangle. Now, we just plug in what we know. So we have 150 times 70- 100 times 20. Simplifing we have 10500 - 2000 After that we get 8,500
ReplyDeleteGood Blog Amy! For you first problem you find the total area of the rectangle as a whole, then you find the area of the white region and subtract it from the whole part. Starting off you have 70*150=10500, then the white part, 20*100=2000. Now to subtract, 10500-2000=8500. I already answered four other question on Amber P.'s blog.
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