Two cubes have their volumes in the ratio 1:27. Find the ratio of their surface areas.
A1:9
B9:1
C27:1
D3:9
A1:9
B9:1
C27:1
D3:9
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The height of the cylinder is 2times the radius of base of cylinder.If the area of base of the cylinder is 225 cm2.Find the curved surface area of the cylinder?