XZ is a common external tangent to circles W and Y. What is the distance between the two centers of the circles? Round to the ne
2 answers:
Construct a triangle by drawing a line parallel to XZ at Center W; intersecting the radius from Center Y to Z.
It is a right-angled triangle with one side at the same length as XZ = 42.
Length of the other side of the right-angle is the difference in radius = 19-11 = 8
Distance between centers = length of hypothesis
= sqrt(42^2 + 8^2)
= 42.755 = 42.76
You can Draw a segment WY connecting the centers<span> of the </span>two circles<span>, and then draw a segment, WS, so that YS + SZ = YZ and WS ⊥ YZ).</span>
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