alleryIn a right triangle the legs measure 9 cm and 12 cm. The hypotenuse is
A13 cm
B15 cm
C21 cm
D18 cm
Answer & Solution
Correct answer: B. 15 cm
1. Hypotenuse squared equals 9 squared plus 12 squared.
2. That is 81 plus 144 equals 225.
3. Square root of 225 is 15 cm.
_Source: syllabus Mathematics, Ch 6 "Triangles", §6.5_
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