Answer:
-191
Step-by-step explanation:
Replace variables with corresponding value.
3(3) + (-5)^2 - ((3)(-5))^2
Solve exponent.
3(3) + 25 - 225
Multiply.
9 + 25 - 225
Combine like terms.
-191
Answer:
<h2>30 mm</h2>
Step-by-step explanation:
The formula of an area of a circle:

<em>r</em><em> - radius</em>
<em />
We have

Substitute:
<em>divide both sides by π</em>
<em>use π ≈ 3.14</em>

The diameter <em>d = 2r</em>.
Therefore

Answer:
: Use the Pythagorean Theorem



