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alainabbyboo22
Group Title
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
 one year ago
 one year ago
alainabbyboo22 Group Title
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
 one year ago
 one year ago

This Question is Closed

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.1
do you know this ?
 one year ago

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

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Liked it..
 one year ago

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.1
i just still don't get this .
 one year ago

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

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

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
according 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
 one year ago

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.1
38416 . that is what i got cause i did 8*24.5 which equals 196 , then 196^2 and that gives me 38416 .
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
you take the square root of 196
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
this will give you a smaller number (than 196)
 one year ago

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.1
14 !!
 one year ago

alainabbyboo22 Group TitleBest ResponseYou've already chosen the best response.1
thanks for helping me out on this (: i was lost !
 one year ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
yw
 one year ago
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