A wire is bent into a right triangle with legs 5 cm and 12 cm. Total wire is
A17 cm
B30 cm
C26 cm
D34 cm
Answer & Solution
Correct answer: B. 30 cm
1. Find hypotenuse: 5^2 + 12^2 = 169, c = 13 cm.
2. Perimeter = 5 + 12 + 13.
3. = 30 cm.
4. So the wire is 30 cm long.
_Source: Selina Concise Mathematics Class 9, Ch on Pythagoras Theorem (Mistral OCR'd PDF), section on perimeter problems_
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