anonymous
  • anonymous
will someone please go to this website i need help with problems 5-12 http://docs.google.com/viewer?a=v&q=cache:s_Z6mEDtqnAJ:www.somersclassroom.com/files/Chapter%252011/11.5B.pdf+Answers+to+Practice+B+11.5+Geometry&hl=en&gl=us&pid=bl&srcid=ADGEEShpElU6i2Z7y85NrrTvbtv6Xn4WJVYyv7dLeO0itxvLzove7oq8uuVBixJhT8WeHarT3fU7H8VLiD-lB3r80ml3tteJXW5mtG0dWFZFEwSrLDZiHxlXHME_wCAUoHME2QVUFMpY&sig=AHIEtbRN3mHn7LH_nAJkKRNhqf_6RQ8gLw
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
it wont let me go there.. idk about anybody else.. srry :(
anonymous
  • anonymous
even after you copy and paste the whole thing
anonymous
  • anonymous
yup

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More answers

anonymous
  • anonymous
It let me go there...
anonymous
  • anonymous
well u help me then?
anonymous
  • anonymous
Yes... You are trying to find the area of the shaded part. I think I helped you yesterday. Anyway. Look at #5 - do you see the little tick marks that are on the edge of the circle?
anonymous
  • anonymous
well..its just me then..loll
anonymous
  • anonymous
mine says Bad Request Error 400
anonymous
  • anonymous
yea
anonymous
  • anonymous
So the entire circle is 360 degrees and the circle is cut into 8 equal parts so each part is 360/8 = 45 degrees. You have three shaded areas so you have 45 * 3 = 135 degrees worth of shaded parts You also have a radius of 5 inches Your formula is 135/360 * pi * 5^5 So in your calculator you should get about 9.82 square inches. Do you understand this?
anonymous
  • anonymous
#6. Do you know what the degree of the sector is that goes from A to C to E?
anonymous
  • anonymous
no
anonymous
  • anonymous
NO to #5 or No to #6
anonymous
  • anonymous
no to 6
anonymous
  • anonymous
OK... if you look from B to C to E - it is a straight line so everything from B to A to E MUST add up to 180 degrees which is half of a circle. Since we know the white part is 75 degrees, the shaded part must be 180 - 75 which is 105 degrees? Do you understand this?
anonymous
  • anonymous
yea
anonymous
  • anonymous
OK .. both of those shaded parts are equal.. they are called vertical angles.. so we have 2 - 105 degree sectors that are shaded so 2 * 105 = 210 degrees of the circle are shaded. We also know the radius = 11 inches The formula then is 210/360 * pi * 11^2 = 221.74 square inches OK?
anonymous
  • anonymous
ok
anonymous
  • anonymous
On the circle ones you find the area of the entire circle and then subtract the area of the white area. It would be like taking the whole circle and then cutting out the white area and throwing it away. How much would be left? #7. Area of a circle = pi r^2. Area of the big circle = pi * 8^2 because the radius is the length from the center of the circle to the outside edge. So you would add 5 + 3 to get the radius. The area of the inside circle (white part) would be A = pi * 5^2 So the whole circle = 64 pi and the white circle = 25 pi so you can write the answer as 39 pi inches squared or if you want a number take 39 * pi in your calculator and you should get 122.52 square inches
anonymous
  • anonymous
ok

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