understanding the problem
Answer:
2916 cm
Step-by-step explanation:
In area you have to multiply
So all I did was
18x18x9
which equals 2916
Answer:
m∠B = 49.4°
Step-by-step explanation:
Use the law of cosines to get side c, and then the law of sines to get angle B

sin C/c = sin B/b
sin 99/7.543 = sin B/5.8
sin B = 5.8 sin 99/7.543
= .75945
m∠B = arcsin .75945 = 49.4°