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CBSE Class 9 Answered

represent 2+sq root 2 on number line.
Asked by nisha_vini29 | 21 Apr, 2015, 11:21: PM
answered-by-expert Expert Answer
1. space Draw space straight a space number space line. space Mark space from space 0 space to space 4. 2. space At space the space 0 space mark comma space we space name space it space as space straight A comma space 1 space mark space named space as space straight B comma space 2 space mark space named space as space straight D. 3. space Draw space straight a space perpendicular space bisector space at space straight A. 4. space Take space straight a space measure space of space 1 space cm space and space mark space 1 space cm space on space the space perpendicular space bisector space as space straight C. 5. space Draw space straight a space triangle space ABC. space Using space pythagoras space theorem comma space BC equals square root of 1 squared plus 1 squared end root equals square root of 2. 6. space Now space we space mark space 2 space cm space on space the space numberline. space The space point space of space intersection space of space 2 space cm space is space marked space as space straight D. 7. space Using space the space measure space of space BC comma space we space mark space BC space from space straight D. 8. space therefore space AE space equals space 2 plus square root of 2 space cm comma space denote space the space required space number space on space the space numberline.
Answered by Prasenjit Paul | 22 Apr, 2015, 10:30: AM

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