The areas of two squares are in the ratio 9:16. The smaller square has sides of length 15cm. Find the length of the sides of the larger square.

The areas of two squares are in the ratio 9:16. The smaller square has sides of length 15cm. Find the length of the sides of the larger square
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If areas are ratio 9:16, sides are in ratio sqrt(9):sqrt(16)=3:4=15:20. So larger square has side 20cm.
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