**1. Find the volume(in cm^3) of a right circular cylinder of length 80 cm and diameter of the base 14 cm.**

(a) 1400

(b) 1553

(c) 12320

(d) 13320

**2.**

**The diameter of the base of a right circular cylinder is 14 cm, while its length is 40 cm. Find the total surface area of the cylinder.**

(a) 2068 sq cm

(b) 1825 sq cm

(c) 1925 sq cm

(d) 2160 sq cm

**3. If the lateral surface area of a cylinder is 94.2 sq cm and its height is 5 cm, then find the radius of its base. (π = 3.14)**

(a) 5 cm

(b) 8 cm

(c) 3 cm

(d) 4 cm

**4.**

**A rod of 2 cm diameter and 30 cm length is converted into an electric wire of 3 m length of uniform thickness. The diameter of the wire is:-**

(a) 2/10 cm

(b) 2/√10 cm

(c) 1/√10 cm

(d) 1/10 cm

**5.**

**What is the height of a solid cylinder of radius 5 cm and total surface area is 660 sq cm?**

(a) 10 cm

(b) 12 cm

(c) 15 cm

(d) 16 cm

**6. What will be the curved surface area of a right circular cylinder having length 160 cm and radius of the base is 7 cm?**

(a) 6020 sq cm

(b) 5052 sq cm

(c) 7045 sq cm

(d) 7040 sq cm

**7.**

**The ratio of the radii of two cylinders is 2 : 3 and the ratio of their heights is 5 : 3. The ratio of their volumes will be:-**

(a) 4 : 9

(b) 9 : 4

(c) 20 : 27

(d) 27 : 20

**8. The curved surface area of a cylindrical pillar is 264 sq m and its volume is 924 m^3 The ratio of its diameter to its height is:-**

(a) 7 : 3

(b) 3 : 7

(c) 7 : 6

(d) 6 : 7

**9.**

**If height of cylinder is decreased by 8%, while its radius remains unchanged, by what per cent does the volume decrease?**

(a) 4%

(b) 6%

(c) 8%

(d) 10%

**10.**

**If the radius of a cylinder is increased by 25% and its height remains unchanged, then find the per cent increase in volume.**

(a) 56.25%

(b) 52.25%

(c) 50.4%

(d) 60.26%

**11.**

**If the radius of cylinder is decreased by 8%, while its height is increased by 4%, what will be the effect on volume?**

(a) 11.9744% (decrease)

(b) 11.9744% (increase)

(c) 12.4678% (decrease)

(d) 12.4678% (increase)

**12.**

**A drainage tile is a cylindrical shell 21 cm long. The inside and outside diameters are 4.5 cm and 5.1 cm, respectively. What is the volume of the clay required for the tile?**

(a) 6.96 π cm^3

(b) 6.76 π cm^3

(c) 5.76 π cm^3

(d) None of these

**13.**

**The diameter of a road roller is 84 cm and its length 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground (in sq m).**

(a) 1632

(b) 1817

(c) 1532

(d) 1584

**14.**

**In a temple a cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the piller at the rate of Rs. 10 per sq m.**

(a) Rs. 50

(b) Rs. 68

(c) Rs. 98

(d) Rs. 55

**15.**

**A Metro piller 14 cm in diameter is 5 m high. How much material was used to construct it?**

(a) (77×(10)^2 ) cm^3

(b) (77×(10)^4 ) cm^3

(c) (77×(10)^5 ) cm^3

(d) (77×(10)^3 ) cm^3