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Example Questions
Example Question #41 : How To Find The Area Of A Circle
What is in radians?
Possible Answers:
Correct answer:
Explanation:
To convert degrees to radians, we need to remember the following formula.
.
Now lets substitute for degrees.
Example Question #335 : Sat Mathematics
A circle is circumscribed by a square, and that square is the base of a cube. If the volume of the cube is 216, what is the area of the circle?
Possible Answers:
Correct answer:
Explanation:
The equation for the volume of a cube is
.
If V= 216, then s = 6.
When a circle is circumscribed by a square the diameter of the circle is equal to the length of one side of the square. In this case, one side of the square is equal to 6; therefore the diameter of the circle is also 6. We can find the area of a circle with the equation
and since the radius is equal to half the diameter:
Momeena
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