Mathematics
If the radius of the base of a right circular cylinder is halved, keeping the height same, what is the ratio of the volume of the new cylinder to that of the original one?
1 : 2
1 : 4
1 : 8
4 : 1
Related Questions
The number of coins, 1.5 cm in diameter and 0.2 cm thick to be melted to form a right circular cylinder of height 10 cm and diameter 4.5 cm, is :
380
450
472
540
The curved surface area of a cylinder is 4400 cm2 and the circumference of its base is 110 cm. The volume of the cylinder (in cm3) is :
36000
38500
40150
42250
The radii of two cylinders are in the ratio 2 : 3 and their heights are in the ratio 5 : 3. The ratio of their curved surface areas is :
2 : 5
8 : 7
10 : 9
16 : 9