Given ⊙N, what is mABC ?

A.111°
B.138°
C.222°
D.276

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?