Two cylinders are similar. The radius of cylinder cap A is 5 point 6 inches. The radius of cylinder cap b is 1 point 4 inches. If the height of cylinder cap b is 4 inches, what is the height of cylinder cap A ?

Similar cylinders have the same ratio of corresponding lengths. The radius of cap A is 5.6 ÷ 1.4 = 4 times the radius of cap B, so its height is also 4 times as great: 4 × 4 = 16 inches. The correct choice is 16 inches.

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