Measuring Space Perimeter and Area — Flashcards
CBSE · Class 9 · Mathematics
84 flashcards for Measuring Space Perimeter and Area (CBSE Class 9 Mathematics) to test yourself on key terms and facts.
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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।…
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.
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.
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।…
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।…
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.
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.
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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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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