An equilateral triangle has its side of 3 √3 cm, then radius of its

1.	An equilateral triangle has its side of 3 √3 cm, then radius of its circum-circle is: 1. 3 cm 2. 4 cm 3. 2 √3 cm 4. 2 cm
Answer» 1. 3 cm R = \(\frac{2}{3}\) x altitude = \(\frac{2}{3}\times\frac{\sqrt{3}}{2}\times3\sqrt{3}\) = 3 cm

An equilateral triangle has its side of 3 √3 cm, then radius of its circum-circle is: 1. 3 cm 2. 4 cm 3. 2 √3 cm 4. 2 cm

Answer»

1. 3 cm

R = \(\frac{2}{3}\) x altitude

= \(\frac{2}{3}\times\frac{\sqrt{3}}{2}\times3\sqrt{3}\)

= 3 cm

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An equilateral triangle has its side of 3 √3 cm, then radius of its circum-circle is: 1. 3 cm 2. 4 cm 3. 2 √3 cm 4. 2 cm

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