Surface Area of a Cylinder

Q. Find the surface area of a table weight whose net is labelled with dimensions and base area as shown below.

1. 196 sq cm
2. 208 sq cm
3. 198 sq cm
4. 217 sq cm

Q. Find 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.

Q. Which among the following represents the total surface area of a right circular cylinder?

1. $2\pi r^2+\pi rh$
2. $2\pi (r^2+rh)$
3. $2\pi r^2+\pi r^{2}h$
4. $\pi r^2+\pi r^{2}h$

Q. A particular medicine needs to be covered with an aluminum foil of the given dimensions. If the total area of the hexagonal pyramid = 294 sq cm and the area of the hexagonal base = 168 sq cm, find the area of one triangle.

1. 21 sq cm
2. 32 sq cm
3. 64 sq cm
4. 26 sq cm

Q. If a rectangular sheet of paper $40cm\times 22cm$ is rolled to form a hollow cylinder of height $40cm$, then find the radius of the cylinder.

Q. A particular medicine needs to be covered with an aluminum foil of the given dimensions. If the total area of the hexagonal pyramid = 294 sq cm and the area of the hexagonal base = 168 sq cm, find the area of one triangle.

1. 64 sq cm
2. 21 sq cm
3. 26 sq cm
4. 32 sq cm

Q.

___ cm is the height of a cylinder whose radius is 14 cm and the total surface area is 2640 sq.cm

Q. The diameter of a cylinder is $28$cm and its height is $20$cm find the volume of the cylinder.

Q.

What is the formula of finding the area of a cylinder ?