P, Q,S and R are points on the circumference of a circle of radius r, such that POR is an equilateral triangle and PS is a diameter of the circle. What is the perimeter of the quadrilateral PQSR?

P, Q, R and S are the points on the circumference of a circle of radius r, such that PQR is an equilateral triangle and PS is a diameter of circle. What is the perimeter of the quadrilateral PQSR?

The circumference of a circle is equal to the perimeter of an equilateral triangle. If the radius of the circle is 7 cm what is the length of the equilateral triangle ?

An equilateral triangle with a perimeter of 12 is inscribed in a circle. What is the area of circle?

The perimeter of a quadrant of a circle of radius 'r' is :

The perimeter of a quadrant of a circle of radius 'r' is :

In vacuum, three small spheres are placed on the circumference of a circle of radius r in such a way that an equilateral triangle is formed. If q be the charge on each sphere, determine the intensity of electric field and potential at the centre of the circle.

Three small spheres are placed on the circumference of a circle of radius r in such a way that an equilateral triangle is formed. If the charge of each sphere is q, the electric field intensity at the centre of the circle will be __________. [fill in the blanks]

The circumference of a circle circumscribing an equilateral triangle is 24 pi units.Find the area of the circle inscribed in the equilateral triangle.

The circumference of a circle circumscribing an equilateral triangle is 24pi units dot Find the area of the circle inscribed in the equilateral triangle.