S K Gupta and Anubhuti Gangal Solutions for Chapter: Volume and Surface Area of Solids, Exercise 4: Exercise 22(D)

Copy and complete the table. $\left(\mathrm{\pi }=\frac{22}{7}\right)$

Copy and complete the table. $\left(\mathrm{\pi }=\frac{22}{7}\right)$

Copy and complete the table. $\left(\mathrm{\pi }=\frac{22}{7}\right)$

A closed circular cylinder has a diameter $20 \mathrm{cm}$ and height $30 \mathrm{cm}$. Find the total surface area of the cylinder. $\left(\mathrm{\pi }=3.14\right)$

A cylindrical pillar is $1 \mathrm{m}$ in diameter and $4.2 \mathrm{m}$ in height. Find the cost of white washing the curved surface of the pillar at the rate of $₹15 \mathrm{per} {\mathrm{m}}^2$.

Find the height of the solid cylinder if its total surface area is 660 cm² and radius is 5 cm.

The inner diameter of a circular well is $4.2 \mathrm{m}$. It is $12 \mathrm{m}$ deep. Find its inner curved surface area.(upto one decimal place)

If the radius of a cylinder is double and the height is halved. What is the ratio between the new curved surface area and the previous curved surface area of the cylinder?