Home › ICSE Class 9 › mathematics › Pythagoras Theorem › A wire is bent into a right triangle with legs 5…
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_
Related questions
In an isosceles right triangle each equal side is 10 cm. The hypotenuse isIf 7, 24 and c are sides of a right triangle with c the hypotenuse, c equalsHypotenuse of a right triangle is 17 cm and one leg is 8 cm. Other leg isFind x if sides of a right triangle are 9, x and 15 with 15 the hypotenuse.A rhombus has diagonals 16 cm and 12 cm. The side of the rhombus isTriangle ABC is right-angled at C with BC = 24 cm and AC = 7 cm. AB equalsTwo poles of heights 15 m and 6 m stand 12 m apart. The distance between their tops isA right triangle has legs of 1 cm each. Its hypotenuse is