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anonymous
 one year ago
What is the value of x in the circle below
anonymous
 one year ago
What is the value of x in the circle below

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2x is the radius of the circle, right?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Yes, it is. Here is another radius. All radii are congruent. dw:1438042883506:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2can you find the upper x? dw:1438042948351:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hmm i want to say 18?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Notice we are dealing with a right triangle, and we can call upon our friend, Mr. Pythagoras, to help us.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Use the Pythagorean theorem. x is the radius of the circle and is the hypotenuse of the triangle.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Nice job at explaining @mathstudent55

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2@omgitsjc Do you know how to use the Pythagorean theorem?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2dw:1438043205414:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2In a right triangle, we call the two legs (the sides that form the right angle) legs a and b. The longest side, opposite the right angle, is the hypotenuse. We call the hypotenuse c.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2The Pythagorean theorem states that \(a^2 + b^2 = c^2\) is true for every right triangle.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Look at the last picture above. We have a = 4; b = 16; we need c \(4^2 + 16 ^2 = c^2\) \(c = \sqrt {272} \) \(c \approx 16.49\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.2Remember to round off to the nearest tenth.
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