C is the center of the circle. Find the length of arc QPR
http://media.education2020.com/evresources/2092515_f52585a6-6270-4c6d-939b-0093b7f0cc71.png

Question

C is the center of the circle. Find the length of arc QPR
http://media.education2020.com/evresources/2092515_f52585a6-6270-4c6d-939b-0093b7f0cc71.png

anonymous · Answer

can someone please help me?

anonymous · Answer

i think th formula for this is A= theta/360 *pi*r^2  but im not sure.

anonymous · Answer

@dan815 ?

anonymous · Answer

WILL GIVE MEDAL!!

anonymous · Answer

@Luigi0210

danjs · Answer

hi

anonymous · Answer

hi. Can you help with this question please?

danjs · Answer

sure.
The Radius is 15,  so the total circumference of that circle is 
$$C = 2*\pi*r = 30\pi$$

anonymous · Answer

ohh

anonymous · Answer

wait so.. what was the formula for this?

danjs · Answer

Circumference of a circle is 2 times pi times the radius

danjs · Answer

They want the length of arc QPR  which is some fraction of that total circumference

anonymous · Answer

A.
S=23.55
B.
S=47.10
C.
S=70.65
D.
S=141.30

anonymous · Answer

Would it be D?

jim_thompson5910 · Answer

@huaman you said that `i think th formula for this is A= theta/360 *pi*r^2  but im not sure`

that formula is for figuring out the AREA of a pie slice like you see below

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