Answer:
Step-by-step explanation:
The tangent segment is perpendicular to the diameter, so the triangle is a right triangle (not just based on its appearance). A property of circles is: a tangent is perpendicular to the radius drawn to the point of tangency.
In the right triangle, one leg has length 12.6, and the hypotenuse has length 21.
Apply the Pythagorean Theorem: (leg)^2 + (leg)^2 = (hypotenuse)^2
Oh, and the diameter has length 2x!

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Answer:
Step-by-step explanation:
x^2= 11-4
remember a squared plus b squared eqauls c squared
Pythagorean Thereom
good luck solving the rest im tired hate my life and got other things to do
Answer:
The formula is adding 8 for every row of seats.
Step-by-step explanation:
This is because the relationship between these numbers keep on adding 8 so for instance next row would have 84 seats.
Hope this is what your looking for.