Answer:
8+pi/2
Step-by-step explanation:
The area of the rectangle on the bottom is 8, or 2*4. The area of the top is half (because it's a semi circle) of pi*r^2, or just 1/2 pi
Answer:
B. 
Step-by-step explanation:
Option B is the correct answer
When it comes to finding a missing angle of a right triangle all you have to do is subtract the sum of the other two angles that you already know. For example, when you have a right triangle and the measures of two angles are 90 and 65 all you have to do is this...
90+65= 155
and...
180-155= 25 which is the sum of the missing angle.
Hope I helped!