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Grade: 12th pass

                        

4. If the lateral surface of a cylinder is 94.2 cm2 and its height is 6 cm, then find (i) radius of its base (ii) its volume. (Use tr = 3.14)

4. If the lateral surface of a cylinder is 94.2 cm2 and its height is 6 cm, then find
(i) radius of its base (ii) its volume. (Use tr = 3.14)

one month ago

Answers : (1)

Pawan Prajapati
askIITians Faculty
5328 Points
							Given lateral surface = 94.2 cm2• 
(i) 2nrh = 94.2 => 2 ><• 3.14 >< r >< 5 = 94.2 
94.2 

r = 
10x 3.14 

= 3 cm. 

(iiJ Volume = rh = 3.14 x •(3)2 >< 6 cm3 
= 3.14 x 46 cm3 = 141.3 cm3 

						
one month ago
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