What is the length of AB?
2 answers:
R = 14.5 form a right triangle with the 10 as 1st side and r as the hypotenuse. get the length of the other side using pythagorean. c = sqrt(14.5^2 - 10^2) = 10.5 The length from the center to point A = c = 10.5 AB = r - c = 14.5 - 10.5 = 4 length AB = 4
The radius of the circle is given to be r = 14.5
Let the center be O. So OB is the radius = 14.5
We can draw a triangle as shown in the image below. We have a right angled triangle. We know the hypotenuse and the base, we need to find the perpendicular side. This can be done using the Pythagorean theorem.
So, we can write:
Thus, the measure of OA = 10.5
OB = OA + AB
14.5 = 10.5 + AB
⇒
AB = 4
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