Question : The radius of a cylinder is 14 cm. If the height of the cylinder is four times of its radius, then what is the curved surface area of the cylinder?
Option 1: 5546 cm2
Option 2: 4928 cm2
Option 3: 4694 cm2
Option 4: 5214 cm2
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Correct Answer: 4928 cm2
Solution : Given that: $r= 14$ cm and $h = 4r= 4 × 14 = 56$ cm $\therefore$ Curved surface of the cylinder = $2\pi r h=2 \times \frac{22}{7} \times 14 \times 56 = 4928$ cm2 Hence, the correct answer is 4928 cm2.
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Question : The radius of a right circular cylinder is 7 cm. Its height is thrice its radius. What is the curved surface area of the cylinder?
Option 1: 724 cm2
Option 2: 666 cm2
Option 3: 924 cm2
Option 4: 264 cm2
Question : What is the area of the lateral surface of a right circular cylinder, If the circumference of the base is 22 cm and its height is four times its radius?
Option 1: 388 cm2
Option 2: 308 cm2
Option 3: 408 cm2
Option 4: 288 cm2
Question : If the curved surface area of a cylinder is 440 cm2 and the height of the cylinder is 10 cm, then what is the radius (in cm.) of the cylinder?
Option 1: 7
Option 2: 14
Option 3: 21
Option 4: 3.5
Question : The curved surface area of a cylinder is 968 cm2. If the height of the cylinder is 11 cm, then what will be the diameter of its base?
Option 1: 26 cm
Option 2: 22 cm
Option 3: 28 cm
Option 4: 24 cm
Question : What will be the curved surface area of a cylinder having a radius of 20 cm and a height of 34 cm?(use $\pi$ = 3.14)
Option 1: 3245.7 cm2
Option 2: 4328.98 cm2
Option 3: 4270.4 cm2
Option 4: 4320.6 cm2
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