[" (Take "pi=3.14)]

(Taking pi=3.14 )Find the Circumference of a Circle whose radius is : a) 8 cm b) 15 cm and c) 20 cm

Taking pi=3.14 , find the area of a whose radius is : (i) 10 cm (ii) 15 cm

The volume of a cylindrical vessel is 6838. 92 cu.cm and its height is 18 cm . Find the area of its curved surface, taking pi=3.14 .

Taking pi=3.14 , find the radius and circumference of a circle whose area is : (i) 200.96cm^(2) (ii) 379.94 m^(2)