The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find theratio of its diameter to its height ?
A3:7
B7:6
C6:7
D7:3
A3:7
B7:6
C6:7
D7:3
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The ratio of the area (in ) to circumference (in cm) of a circle is 35 : 4. Find the circumference of the circle?