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The inradius of an equilateral triangle is 13 cm. What will be the radius of the circumcircle of this triangle?

A15 cm

B26 cm

C30 cm

DNone of these

Answer:

B. 26 cm

Read Explanation:

In an equilateral Triangle: Circumradius = 2 × Inradius ⇒ R = 2 × r R = 2 × 13 = 26 cm


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