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 area of a rectangle is thrice that of a square. The length of the rectangle is 20 cm and the breadth of the rectangle is times that of the side of the square. The side of the square, (in cm) is