how do u find the area of part of a circle?

- anonymous

how do u find the area of part of a circle?

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- schrodinger

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- anonymous

Be specific about the part of the circle

- mathteacher1729

http://math.about.com/library/blmeasurement.htm

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## More answers

- anonymous

half of the circle and its diameter is 16

- anonymous

1/2 pi(diameter/2)^2

- anonymous

Find the area of the circle (pi x r x r) r = 8 as it is half a diameter
so in your calcu;ator press, pi * 64 then divide by 2

- anonymous

1/2pi*64=32pi

- anonymous

pi is the button that looks like mini stonehenge:)

- anonymous

what if it gives u like a pizza slice size or a quarter

- anonymous

mean any sector of the circle?

- anonymous

yes

- anonymous

Well you will need to know the angle at the centre. This is then a ratio to 360 degrees which is then multiplied by pi r squared

- anonymous

area of a sector =1/2r^2*central angle

- anonymous

the measure of the angle is 45

- anonymous

angle is theta (we use this for any unknown angle)/ 360 multiplied by pi r squared.

- anonymous

45/360 * pi r*-r

- anonymous

pi r squared that should say

- anonymous

gian...there isnt pi in the area of sector

- anonymous

thanks u

- anonymous

uzma there is pi in a whole circle and a sector is a fraction part of a circle

- anonymous

http://math.about.com/od/formulas/ss/surfaceareavol_7.htm

- anonymous

Uz look at the formula on the page you just posted.

- anonymous

so?

- anonymous

the one that says degrees

- anonymous

oh u r using that one :) i talked about the radian measure:

- anonymous

No problem good talking to you!

- anonymous

i ahve anpother question can u guys help me

- anonymous

post it

- anonymous

Softball, best to post it so all can see it on left of screen ask a question

- anonymous

kk find the area of a rhombus with a perimeter of 40 and an angle of 60

- anonymous

I will post a detailed jpeg for yoy.

- anonymous

okk

- anonymous

where is it

- anonymous

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- anonymous

Is that clear? I am assuming you have been taught this method of finding the area of a triangle

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