Answer:
80.5
Step-by-step explanation:
16π yards²To make things a little simpler to start off, convert the angle of the sector AEB into radians. It's 90 degrees, which is equivalent to π/2 radians.
Plug π/2 into the formula for finding the area of a sector, along with the value of 8 for r, the radius:

(angle in radians)

When you simplify that down, you get A = 16π so the answer is
16π yards²
If $1 is worth 30.23 rubles, just multiply 75 by 30.23
75*30.23=2,267.25
So, he'll get 2,267.25 rubles.
Add 16+12 to get 28.
Add 9+12 to get 21.
Think of these as the sides of a triangle.
a^2+b^2=c^2
28^2+21^2=1225
√1225=35
You threw the ball 35 feet.
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