Curved Surface Area of a Cylinder

Q.

A suitcase with measures $80cm\times 48cm\times 24cm$ is to be covered with a tarpaulin cloth. How many meters of tarpaulin of width $96cm$ is required to cover $100$ such suitcases?

Q.

The curved surface area of a cylinder of radius r and height h is:

1. 2πrh +π

2. 2πrh +2π

3. 2πrh

4. πrh

Q.

Length of tape required to cover the edges of a semi-circular disc of radius $10cm$ is

(a) $62.8cm$
(b) $51.4cm$
(c) $31.4cm$
(d) $15.7cm$

Q.

Question 70

There is a circular pond and a footpath runs along its boundary. A person walks around it, exactly once keeping close to the edge. If his step is 66 cm long and he takes exactly 400 steps to go around the pond, then find the diameter of the pond.

Q.

A metal pipe is $77cm$ long the inner diameter of a cross-section is $4cm$ and the outer diameter is $4.8cm.$ find it's

Q.

If the surface area and volume of a cylinder are numerically equal then its radius is:

1. 1 unit

2. 3 units

3. 2 units

4. 4 units

Q. The height of a cylinder is 7cm and radius is 10cm. Then its curved surface area is ___________.

1. 440cm${}^2$
2. 220cm${}^2$
3. 44cm${}^2$
4. None of the above

Q. The diameter of the base of a right circular cylinder is 4.2 DM and its height is 1 DM . Find the area of the curved surface CM ².

Q.

A road roller has a diameter of 84 cm and it's width is 1.2 m. If it takes 500 complete revolution to level a ground. Find area of the ground. Also find the cost of leveling the ground at the rate of 50 paise per metre square

Q.

The curved surface area of a cylinder is $1320c{m}^2$ and its base has a radius of $10.5cm$. Find the height of cylinder.

Q. If the curved surface area of a cylinder of height 14 cm is 88 sq. cm, then find the diameter of the cylinder.

1. 2 cm
2. 4 cm
3. 3 cm
4. 1 cm

Q.

The ratio between the curved surface area and the total surface area of cylinder is 2:5. Then the ratio between the height and radius of cylinder will be:

1. 2:3

2. 3:2

3. 1:1

4. 3:5

Q. If the curved surface area of a cylinder is 440 cm${}^2$ and the circumference of its base is 44 cm, then its height will be ________.

1. 7 cm
2. 20 cm
3. 10 cm
4. 15 cm

Q. The curved surface area of the cylinder is 17600 $c{m}^2$ and the circumference of its base is 220 cm. The height of the cylinder is

1. 80 cm
2. 85 cm
3. 95 cm
4. 90 cm

Q.

Formula to find the total surface area of cylinder is:

1. 

2. 

3. 

4. 

Q.

A road roller takes 780 complete revolutions to level a road once. Find the area of the road if the diameter of a road roller is 42 cm. [2 MARKS ]

Q.

Question 12

If the radius of a cylinder is tripled but its curved surface area is unchanged, then its height will be
(a) tripled (b) constant
(c) one-sixth (d) one-third

Q.

The total surface area of a solid cylinder is 462 CM square. if its curved surface area is one by third of the total surface area. find the volume of the cylinder

Q. When a lateral cylinder is cut, we get a rectangle. Why is the formula for curved surface area of cylinder is not l*b ?

Q.

The area of paper required to make a hollow cylinder is equal to the curved surface area of the cylinder.

1. True

2. False

Q. The circumference of the base of a cylinder is 132 cm. Its height is 25 cm. What is the volume of the cylinder?

Q. A cylinder has a height of 15 cm and the radius of its base is 5 cm. What is the area of its curved surface? (Take π = 3.14)

Q. Dear sir/Ma'am
I have a problem in solving this question
Q. The lateral surface area of a hollow cylinder is 4224 cm^{​​​​​2} it is cut along its height and formed a rectangular sheet of width 33 cm find the perimeter of rectangular sheet?

Q. The radius of two cylinder are in the ratio 2:3 and their height are in the ratio 5:3 calculate the ratio of their curved surface areas

Q.

Find the height of the cylinder whose volume is 1.54 m³ and diameter of the base is 140 cm?

Q. The ratio of radii of two cylinders is $1:\sqrt{3}$ and their heights are in the ratio 2 : 3. The ratio of their curved surface area is:

1. $4:3\sqrt{3}$
2. $2:3\sqrt{3}$
3. $1:\sqrt{3}$
4. $3:2\sqrt{3}$

Q. What is Surface area of cylinder ?

Q. Mark (✓) against the correct answer:
the area of the base of a circular cylinder is 35 cm² and its height is 8 cm. The volume of the cylinder is
(a) 140 cm³
(b) 280 cm³
(c) 420 cm³
(d) 210 cm³

Q. the radii of 2 cylinders are in the ratio 2:3 and their heights are in the ratio 5:3 .
calculate the raio of their curved surface area

Q. The diameter of the base of a cylinder is 14 cm and its height is 17 cm. What is its volume?