Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

The legs of a right triangle are (x) cm and (x+5) cm, and the hypotenuse is (25) cm. What is the smaller leg?

Answer and explanation

Correct answer: (15) cm

For a right triangle, the Pythagorean theorem says that the sum of the squares of the legs equals the square of the hypotenuse. Substituting the given lengths gives \(x^2+(x+5)^2=25^2\u0005. After expansion and simplification, \(x^2+5x-300=0\u0005, which factors as \((x-15)(x+20)=0\u0005.

The algebraic solutions are \(x=15\u0005 and \(x=-20\u0005. A length must be positive, so \(x=15\u0005 cm. The other leg is then 20 cm, and 15 cm is the smaller leg. Therefore option B is correct. The hypotenuse, 25 cm, is indeed the largest side.

Related tags

Quadratic EquationsPythagorasRight Triangle

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.