Question

There is an equilateral triangle of side ‘a’ units. Now we join any two sides of the triangle to form a cone.What is the radius of the cone formed?

• A. a
• B. a/4
• C. a/π
• D. None of these

Answer 1

The correct option is D None of these

Circumference of the base of cone = 2$\pi$r = side of triangle = a

radius (r) = $\frac{a}{2\pi }$