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<h1>3 on the page- can you please explain to me how to get the answer?</h1>
<p>Thanks.</p>
<p>Make a right triangle with the left most point, the uppermost point, and A. </p>
<p>You know the bottom is 4 and the hypotenuse is 8. Solve for the missing side. </p>
<p>Now add on 8 because you still need a radius length on each side to get the length of h. </p>
<p>You get C, 14.93</p>
<p>Thank you very much!</p>
<p>Another way: Make an equilateral triangle using the centers of each circle. Drop a perpendicular from the top to point A. Now you have a 30-60-90 triangle. The base of that triangle is 4, and the height is 4 sqroot 3. Add the height and two radii and answer is
4 sq root 3 + 8.</p>