Question

an equilateral triangle of side 6 cm is inscribed in a circle find the radius of the circle​

Answer 1

Answer:

Let the side be "x" for a sec.

a/2 is half the side.

if you draw the diagram:

cos30 = R/a/2

= > R = a/2 × cos30

= > R = a/2 × √3/2

= > R = √3a/4

= > R = 6√3/4

= > R = 3√3/2

Now calculate it on ur own!

Answer 2

Answer:

$\\ \sqrt{3} \div 4 \ \times 6 {}^{2} = 9 \sqrt{3}$