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babydoll332
Use the arc length formula and the given information to find r. s = 12 cm, θ = 36°; r = ?
30/pi or 60/pi im not sure please help wich 1 i think its deff 30/pi
the formula is s = r*theta, where theta is given in RADIANS. so you should first convert that degree measure into radians then you can use the formula.
\(\large \theta = 36 \cancel {deg} \cdot \frac{\pi rad}{180 \cancel {deg}}=\frac{ \pi }{5} \text radians \)
so now, \(\large 12=\frac{\pi}{5}\cdot r \rightarrow r=\frac{60}{\pi}\)
oh i see thank you so much