Question

I CANT GET ANY HELP!!!! PLEASE HELP!!!

BC is tangent to circle A at B and to circle D at C.
AB = 10, BC = 25, and DC = 3. Find AD to the nearest tenth. Hint: Draw an auxiliary line from D to BA.

Choices:
A. 26
B. 28.2
C. 25.2
D. 26. 9

Answer 1

What's all the shouting abut?

Answer 2

After constructing the auxiliary line as suggested u have a triangle with legs of 7 and 25 and you want the third leg which is simple Pythagorus.

Answer 3

A. 26
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Answer 4

Theorems Used:
Through a point outside a line, exactly one line perpendicular to the given line can be drawn.
A tangent to a circle is perpendicular to a radius drawn to the point of tangency.
The sum of the interior angles of a quadrilateral is 360.
Pythagorean Theorem