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

In a square model with side (a+b), in which form is the total area directly obtained from the outer boundary?

Answer and explanation

Correct answer: (a+b)²

Direct answer: D, (a+b)². The area of a square is side multiplied by itself. Since the outer boundary has side length a+b, its total area is (a+b)(a+b) = (a+b)². This is the direct expression obtained from the outside of the model. Option A is also equal to the same area after the square is divided into parts and the identity is expanded, but it is not the form read directly from the outer boundary. Option B represents a difference of squares, not this complete square. Option C is only the product of a and b and ignores most of the model. Memory cue: outside side gives the compact square form; inside pieces give the expanded form a²+2ab+b².

Related tags

Outer BoundarySquare AreaIdentity ExpansionVisual Models Of IdentitiesExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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.