Question

PLEASE HELP ME ANSWER THESE QUESTIONS FOR THIS IMAGE.
-PICTURE IS UNDER THIS POST-

Answer 1

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Answer 2

\[\frac{126}{360}*C = 14\pi\]
So to find the circumference of the circle we solve for C using algebra.
\[C = 40\pi\]

Answer 3

OK so 9 is 40?

Answer 4

yes. 40pi

Answer 5

would #10 be a?

Answer 6

yep it's 10pi

Answer 7

ok! what about 11 and 12?

Answer 8

for 11 we write an equation to solve for x, where x is the measure of angle TRS
\[ \frac{x}{360}*18\pi= 7\pi\]
\[x = 140\]

so for 11 the answer is 140

Answer 9

for 12 we use another equation \[\frac{135}{360}*\pi(\frac{D}{2})^2 = 73.5\pi\]
\[D = 28\]

Answer 10

so for 12 the answer is 28

Answer 11

Thanx ALOT!