The Pythagorean Theorem states that the sum of the squares of the lengths of the legs of a right triangle is equal to the square of the length of the hypotenuse. Use the Pythagorean Theorem formula
+
(14 Ft.) =
(13Ft.)
+ (13)(13) = (14)(14)
+ 169 = 196
= 196-169
= 27
Answer:
Step-by-step explanation:
Since the chord is a tangent to the smaller circle, it will meet the radius of the smaller circle at right angle.
Let be the length of half of the chord. See diagram in attachment.
Then from Pythagoras Theorem,
We take the positive square root of both sides to obtain,
The length of the chord is
The correct answer is A
