Quantitative Aptitude Ques 40

Question: The distance between the centres of two equal circles each of radius 3 cm is 10 cm. The length of a transverse common tangent is

Options:

A) 4 cm

B) 6 cm

C) 8 cm

D) 10 cm

Show Answer

Answer:

Correct Answer: C

Solution:

  • Length of transverse common tangent $ =\sqrt{{{(OO’)}^{2}}-{{(r _1+r _2)}^{2}}}=\sqrt{10^{2}-{{(3+3)}^{2}}}=8,cm $
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