Answer:
34
Step-by-step explanation:
79.6.
Remember, the formula for area of a circle is pi x radius^2, and for circumference of the circle is diameter x pi or 2 x radius x pi
Answer:
As shown in the attached figure we have

Now we have 
Thus angle of depression is 
Answer:
40320
Step-by-step explanation:
! means take that number and multiply all the numbers down to 1
8! means
8*7*6*5*4*3*2*1 =40320