1.

1). 9 : 142). 11 : 143). 14 : 134). 17 : 22

Answer»

Given Volume of the CYLINDER = 847 m3

Formula for Volume of cylinder = πr2h

⇒ πr2h = 847 (I)

Curved surface AREA of the cylinder = 242 m2

Formula for Curved surface of cylinder = 2πrh

⇒ 2πrh = 242 (II)

⇒ Dividing Equation (I) with Equation (II), we get

⇒ πr2h/2πrh = 847/242

R/2 = 7/2

⇒ r = 7 m

Substituting the value of r in Equation 2, we get

⇒ 2 × (22/7) × 7 × h = 242

⇒ h = (11/2) m

∴ Required ratio = h/r = (11/2)/7 = 11/14



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