Answer:
736 cm2
Step-by-step explanation:
A= bxh/2
A=12x8/2
A=96/2
A=48x2=96 cm2
A=LxW
A=20x12
A=240 cm2
A=LxW
A=20x10
A=200x2=400 cm2
SA=96+240+400
SA=736 cm2
36-39/12-5
31-39/12
31-3.25
27.75
Add 1.5 to both sides:

Divide both sides by 2:

Consider the arcsin of both sides:

Arcsin and sin simplify, because they are inverse of each other:

Answer:
Median
Step-by-step explanation:
Since the data has an outlier (12,985), mean is not the best average.
This data set does not have a modal value
Therefore the best option is Median