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Measuring Space Perimeter and Area

CBSE · Class 9 · Mathematics

Flashcards for Measuring Space Perimeter and Area — CBSE Class 9 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

76 questions84 flashcards5 concepts

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84 Flashcards
Card 1परिमाप की मूल बातें

किसी आकृति का परिमाप क्या होता है?

Answer

परिमाप किसी आकृति की सीमा के चारों ओर की कुल लंबाई होती है। यह वह दूरी है जो एक छोटा कीट आकृति के चारों ओर एक बार चलकर प्रारंभिक बिंदु पर वापस आने में तय करेगा।…

Card 2Perimeter basics

What is the perimeter of a shape?

Answer

Perimeter is the total length around the border of a shape. It is the distance covered if a tiny insect walks once around the shape and returns to the starting point.

Card 3Perimeter of square

Find the perimeter of a square with side a units.

Answer

Perimeter of square: 4a [a = side length]. Reason: a square has 4 equal sides, so the total boundary length is a + a + a + a = 4a units.

Card 4वर्ग का परिमाप

भुजा a इकाइयों वाले वर्ग का परिमाप ज्ञात कीजिए।

Answer

वर्ग का परिमाप: 4a [a = भुजा की लंबाई]. कारण: वर्ग की 4 बराबर भुजाएँ होती हैं, इसलिए कुल सीमा लंबाई a + a + a + a = 4a इकाइयाँ होती है।…

Card 5समबाहु त्रिभुज का परिमाप

भुजा a इकाइयों वाले समबाहु त्रिभुज का परिमाप ज्ञात कीजिए।

Answer

समबाहु त्रिभुज का परिमाप: 3a [a = भुजा की लंबाई]. कारण: सभी 3 भुजाएँ बराबर होती हैं, इसलिए कुल सीमा लंबाई a + a + a = 3a इकाइयाँ होती है।…

Card 6Perimeter of equilateral triangle

Find the perimeter of an equilateral triangle with side a units.

Answer

Perimeter of equilateral triangle: 3a [a = side length]. Reason: all 3 sides are equal, so the total boundary length is a + a + a = 3a units.

Card 7Perimeter of rectangle

Find the perimeter of a rectangle with length a units and width b units.

Answer

Perimeter of rectangle: 2(a+b) [a = length, b = width]. Reason: opposite sides are equal, so total perimeter is a + b + a + b = 2(a+b) units.

Card 8आयत का परिमाप

लंबाई a इकाइयाँ और चौड़ाई b इकाइयाँ वाले आयत का परिमाप ज्ञात कीजिए।

Answer

आयत का परिमाप: 2(a+b) [a = लंबाई, b = चौड़ाई]. कारण: विपरीत भुजाएँ बराबर होती हैं, इसलिए कुल परिमाप a + b + a + b = 2(a+b) इकाइयाँ होता है।…

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Measuring Space Perimeter and Area covers several key topics that are frequently asked in CBSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
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Understand the core concepts first, then work through the 76 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
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