Answer: 9.17cm
Since it is a right angle triangle, we can use Pythagoras Theorem to find the missing leg.
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Formula
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a² + b² = c², c being the hypotenuse.
The hypotenuse, denoted by c, is 10cm. One leg, denoted by a, is 4cm. Apply the formula and solve for the other leg, denoted by b.
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Solve the missing side
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a² + b² = c²
4² + b² = 10²
16 + b² = 100 ←subtract 16 from both sides
-16 -16
b² = 84 ←square root both sides
b = √84
b = 9.17 (nearest hundredth)
So the other leg, denoted by b, is 9.17cm
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Answer: 9.17 cm
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