a right angled triangle of sides 5, 12, 13 is folded about the 12cm side...............the volume of the solid so formed is.....?????? PLS EXPLAIN!!!!!!

dear shivam.
 in this case

12 cm side will become the height of the cone

13 cm hypotenuse will b slant height and 5cm will be the radius

thus calculate the volume of the cone with h=12 and r = 5...