For a right triangle the length of the two sides a and b can be squared and added together to get the length of the hypotenuse c. So a^2 b^2 = c^2. Since this a sector of a circle we know that the length of OB = OA. So 26^2 26^2 = c^2 which in this instance is the length of AB. So 676 676 = 1352 and the square root of which is 36.8. Now half of that is the length of CB which is 18.4. 18.4^2 (OC)^2 = 676, or 338.6 (OC)^2 = 676. Subtracting 338.6 from both sides gives you (OC)^2 = 337.4 and the square root of which is 18.4. The area of a triangle is 1/2 × height × width so for triangle OAB the area equals 1/2 × 36.8 × 18.4; or 338.6. Now the area of a circle is pi × R^2 or 676pi or 2123.7. And the sector represents 82/360 of the area of the circle. Which 2123.7 × 82/360 = 483.7. So the percentage of the shaded area of the diagram is 338.6 ÷ 483.7 × 100 which equals 70%. All the numbers I used were rounded to the nearest tenth. And hopefully G@G doesn't convert anything into an emoji.

OC=26 cos41degree BC= 26 sin 41 degree area of OAB= OC*BC area of sector=153.45π percentage shaded= area of OAB/total area *100

I love how this is in the dating section.

Someone please help me it would mean a lot?

dumbmb

Xper 3 Age: 25

Someone please help me it would mean a lot?

THIS...

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shortster Follow
Master Age: 42

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4.9K opinions shared on Dating topic.

For a right triangle the length of the two sides a and b can be squared and added together to get the length of the hypotenuse c. So a^2 b^2 = c^2. Since this a sector of a circle we know that the length of OB = OA. So 26^2 26^2 = c^2 which in this instance is the length of AB. So 676 676 = 1352 and the square root of which is 36.8. Now half of that is the length of CB which is 18.4. 18.4^2 (OC)^2 = 676, or 338.6 (OC)^2 = 676. Subtracting 338.6 from both sides gives you (OC)^2 = 337.4 and the square root of which is 18.4. The area of a triangle is 1/2 × height × width so for triangle OAB the area equals 1/2 × 36.8 × 18.4; or 338.6. Now the area of a circle is pi × R^2 or 676pi or 2123.7. And the sector represents 82/360 of the area of the circle. Which 2123.7 × 82/360 = 483.7. So the percentage of the shaded area of the diagram is 338.6 ÷ 483.7 × 100 which equals 70%. All the numbers I used were rounded to the nearest tenth. And hopefully G@G doesn't convert anything into an emoji.

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Hangry22 Follow
Guru Age: 25 , mho 46%

+1 y

OC=26 cos41degree
BC= 26 sin 41 degree
area of OAB= OC*BC
area of sector=153.45π percentage shaded= area of OAB/total area *100

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2 Reply
- matthew0089
  
  +1 y
  Ooooo smart girl. Respect.
  
  Reply
- Hangry22
  
  +1 y
  @matthew0089 that's just plain maths. thanks
  
  Reply

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What Girls & Guys Said

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Anonymous
(36-45)

+1 y

I love how this is in the dating section.

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Anonymous
(36-45)

+1 y

Is that Tirg or Geometry?

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Anonymous
(36-45)

+1 y

School is for fools.

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4 Reply
- Dongtai
  
  +1 y
  Tell that to the unemployment line.
  
  Reply
- Opinion Owner
  
  +1 y
  @Dongtai
  I did and then I won the lottery right after.
  
  Reply
- Dongtai
  
  +1 y
  Not sure how YOU winning the lottery proves school is for fools. I bet you don't know how the lottery was invented. But hey. School is for fools ;)
  
  Reply
- Opinion Owner
  
  +1 y
  @Dongtai
  I actually worked in a school for 13 years believe it or not and sometimes I still think school is overrated.
  
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Liam_Hayden Follow
Guru Age: 31

+1 y

What shortster said.

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