Here's the question you clicked on:
kaylala
trigonometry: Identify if the underlined word/s is true or false If false change it to the appropriate one If the arc length is 30π_feet with central angle equal to (3/4)revolution. The radius is equal to 20feet. 20 is the underlined word
here's a picture of the question: see item # 7
use .. \[S = r \ \theta\]
where S is the arc length r is the radius theta is the angle measure in radiant
angle of 3/4 revolution = 270 degrees = 3pi /2
and the length of the arc is 30 pi feet
\[S = r \ \theta\]\[30 \pi = r \times (\frac{ 3 \pi }{ 2 })\]
now make r the subject and c if the value u get for r is the same as in the question ..
okay thanks. so it is true
u r welcome... and yes the statement is true!