Right Triangle Area of a Circle (by Peeling)

AREA of a CIRCLE: Hit the "Start the Show!" button in the applet below! Then, answer the 5 questions that follow.
Question #1
How does the area of the triangle formed compare with the area of the original circle?
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Question #2
What is the formula for the area of a triangle?
Question #3
The BASE of this triangle is what "part" of the original circle?
Question #4
The HEIGHT of this triangle is what "part" of the original circle?
Question #5
Rewrite the formula from #2 above with your responses from #3 and #4 substituted into this formula. This new formula is the formula used to find the area of a circle.
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– Tracey Weise, Tim Brzezinski

Information: Right Triangle Area of a Circle (by Peeling)