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 2 years ago
can someone help me please ?
If AD = 8 cm and AC = 24.5 cm, calculate the length of AB.
A. 16 cm
B. 15 cm
C. 30.63 cm
D. 14 cm
 2 years ago
can someone help me please ? If AD = 8 cm and AC = 24.5 cm, calculate the length of AB. A. 16 cm B. 15 cm C. 30.63 cm D. 14 cm

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alainabbyboo22
 2 years ago
Best ResponseYou've already chosen the best response.1do you know this ?

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.2hint: use theorem 3 on this page http://www.regentsprep.org/Regents/math/geometry/GP14/CircleSegments.htm

alainabbyboo22
 2 years ago
Best ResponseYou've already chosen the best response.1i just still don't get this .

waterineyes
 2 years ago
Best ResponseYou've already chosen the best response.1Theorem says : \[tangent^2 = Secant \cdot Chord\]

waterineyes
 2 years ago
Best ResponseYou've already chosen the best response.1I.e : \[AB^2 = AD \cdot AC\] Just plug in the values..

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.2according to theorem 3 on that page b*c = a^2 In this context, if AB = x, AD = 8 and AC = 24.5, then (AD)*(AC) = (AB)^2 8*24.5 = x^2 Keep going to solve for x

alainabbyboo22
 2 years ago
Best ResponseYou've already chosen the best response.138416 . that is what i got cause i did 8*24.5 which equals 196 , then 196^2 and that gives me 38416 .

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.2you take the square root of 196

jim_thompson5910
 2 years ago
Best ResponseYou've already chosen the best response.2this will give you a smaller number (than 196)

alainabbyboo22
 2 years ago
Best ResponseYou've already chosen the best response.1thanks for helping me out on this (: i was lost !
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