If the length of the side of an equilateral triangle is 12 cm, then what is its in-radius?

If the length of the side of an equilateral triangle is 6 cm, what is its area ?

If the length of the side of an equilateral triangle is 8 cm, what is its area ?

If the length of side of an equilateral triangle is 10cm , then R =

If the length of each side of an equilateral triangle is 10cm, then its area is

If the length of each side of an equilateral triangle is 10 cm, then its circumradius is

If the side of an equilateral triangle is 6 cm, then its perimeter is

If the length of one side of an equilateral triangle is 10 cm. then find the length of its altitude.

If the length of the sides of an equilateral triangle be increased by 1 cm each, then the area of the triangle increases by sqrt(3) sq-cm. Find the length of the equilateral triangle.