Two circles, each of radius 4
cm, touch externally. Each of
these two circles is touched
externally by a third circle. If
these three circles have a
common tangent, then the
radius of the third circle, in
cm, is
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Answer:
r = 1 cm
Step-by-step explanation:
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Answer: 1
Step-by-step explanation:
Consider a diagram having 2 circles with radius 4cm and the smaller one between them having radius x,
(4+x)^2 = 4^2 + (4-x)^2
On solving, you will get x as 1cm
Step-by-step explanation:
Consider a diagram having 2 circles with radius 4cm and the smaller one between them having radius x,
(4+x)^2 = 4^2 + (4-x)^2
On solving, you will get x as 1cm
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