In an equilateral triangle inradius is 4 cm. what is the circumradius ?
Answer & explanation
Correct answer: option 2
Formula used
Inradius of equilateral triangle = \(\frac{a}{2√3}\)
Circumradius = \(\frac{a}{√3}\)
Calculation
Inradius = \(\frac{a}{2√3}\) = 4
= a = 8√3
Circumradius = \(\frac{a}{√3}\) = \(\frac{8√3}{√3}\)
= 8.
Therefore, answer is 8.