two spherical balls lie on the ground touching. if one of the balls has a radius of 8 cm, and the point of contact is 12 cm above the ground, what is the radius of the other ball ( in centimeters )? Choose the correct answer.
A) 20  B) 24  C) 28  D) 32  E) 36
<gadget id="calculator">4 + 12</gadget>
<output>16</output>

<gadget id="calculator">16 + 8</gadget>
<output>24</output>

<result>B</result>
two spherical balls lie on the ground touching. if one of the balls has a radius of 8 cm, and the point of contact is 12 cm above the ground, what is the radius of the other ball ( in centimeters )?
add(add(const_4.0, 12), 8)
"a straight line will join the two centers and the point of contact , thus making similar triangles . 4 / 8 = ( r - 12 ) / r 4 r = 8 r - 96 r = 24 the answer is b ."