Question

1. If the diameter of a cylinder is 28 cm and its height is 20 cm then its curved surface area is

(a) 880 cm
(b) 1760 cm
(c) 3520 cm
(d) 2640 cm

2. If the curved surface area of a cylinder is 1760 cm^2 and its base radius is 14 cm then its height is

(a) 10 cm
(b) 15 cm
(c) 20 cm
(d) 40 cm

3. The height of a cylinder is 14 cm and its curved surface area is 264 cm^2. The volume of the cylinder is

(a) 308 cm^3
(b) 396 cm^3
(c) 1232 cm^3
(d) 1848 cm^3

4. The curved surface area of a cylindrical pillar is 264 m^2 and its volume is 924 m^3. The height of the pillar is

(a) 4 m
(b) 5 m
(c) 6 m
(d) 7 m

5. The radii of two cylinders are in the ratio 2:3 and their heights are in the ratio 5:3. The ratio of their curved surface areas is

(a) 2:5
(b) 8:7
(c) 10:9
(d) 16:9

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Answer 1

Answer:

Hey mate..! I don't know to attach more than one pic..

Step-by-step explanation:

$\huge\Red{Answer}$

to Qu.1

After this multiply

2*22*2*20=1760cm²

hope it helps you Mate..!

Answer 2

Answer:

1.880cm

2.15cm

3.(c)

4.7m

5.2:5