A circular park has a path of uniform width around it. The difference between outer and inner circumferences of the circular path is 220 m. Its width is (Paper- I)
Three spherical balls of radius 2 cm, 4 cm and 6 cm are melted to form a single spherical ball. In the process, the loss of material is 25% . The radius of the new ball is
Three spherical balls of radius 1 cm, 2 cm and 3 cm are melted to form a single spherical ball. In the process, the loss of material is 25% . The radius of the new ball is