Question

1. Volume of a cylinder is 448pie and height 7 cm. Find its lateral (curved) surface area and total surface area.

2. If base radius of a right circular cylinder is halved keeping the height same find the ratio of the volume of the
reduced cylinder to that of the original cylinder.

3. A hollow cylindrical
cylindrical tube open at both ends is made of iron 3 cm thick. If the external diameter be 56 cm and the length of the tube be 182 cm, find the number of cubic cm of iron in it.

4. A well of 14 m inside diameter is dug 15 m deep. Earth taken out is spread all around to a width of
7 m to form an embankment. Find the height of the embankment.
​

Answer 1

Answer:

Right na .Next part is here