## Realated Questions

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

- On a straight road XY, 100 metres long, five heavy stones are placed two metres apart beginning at the end X. A worker, starting at X, has to transport all the stones to Y, by carrying only one stone at a time. The minimum distance he has to travel (in metres) is :
In the figure given below, ABCD is a rectangle. The area of the isosceles right triangle ABE = 7 cm

^{2}, EC = 3(BE). The area of ABCD (in cm^{2}) is :