Question

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

Answer 1

do you know this ?

Answer 2

hint:

use theorem 3 on this page

http://www.regentsprep.org/Regents/math/geometry/GP14/CircleSegments.htm

Answer 3

Liked it..

Answer 4

i just still don't get this .

Answer 5

Theorem says :

\[tangent^2 = Secant \cdot Chord\]

Answer 6

I.e :

\[AB^2 = AD \cdot AC\]

Just plug in the values..

Answer 7

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

Answer 8

38416 . that is what i got cause i did 8*24.5 which equals 196 , then 196^2 and that gives me 38416 .

Answer 9

you take the square root of 196

Answer 10

this will give you a smaller number (than 196)

Answer 11

14 !!

Answer 12

thanks for helping me out on this (: i was lost !

Answer 13

yw