Advanced Math practice question

Answer: 60

Let the sides be l and w: l + w = 17 and l² + w² = 169. Since (l + w)² = l² + w² + 2lw, 289 = 169 + 2lw, so lw = 60. (The sides are 12 and 5.)

Common wrong answers

If you answered 30

30 halves the area a second time.

If you answered 120

120 is 2lw, forgetting to halve.

If you answered 221

221 is 13 × 17, multiplying the given numbers.

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