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cube face problem

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Synonyms 1. Irrevocable = Unalterable 2. Adorn = beautify 3. Repose = Rest 4. Commotion = Disturbance 5. Nurture = To grow 6. Deny = Refuse 7. Abuse = Scorn 8. Docile = Submissive 9. Considerate = Thoughtful 10. Irresolute = undecided 11. Frugal = Miserly 12. Motive = Intention 13. Pity = Mercy 14. Quash = Reject 15. Restrict = Prohibit 16. Anticipate = Expect 17. Tremendous = Excessive 18. Meticulous = painstaking 19. Abundant = plentiful 20. Acquaint = introduce 21. Change = alter 22. Surreptitiously = secretly 23. Forebode = foretell 24. Genuine = real 25. Adverse = negative 26. Elastic = flexible 27. Vacillate = waver 28. Impeccable = faultless 29. Impediment = obstruction 30. Advance = pr

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The diameter of a roller is 84 cm and its length is 120 cm. It makes 500

ReplyDeletecomplete revolutions to move once over to a level a playground. Find the area

of the play ground. ANS 1580 Sq. m

Explain how ???

Lateral surface area of roller

Delete=2πrh

=2*22/7*42*120

=31680sq.cm

Area of play ground

=31680*500

=15840000sq.cm

Convert sq.cm into sq.m

=15840000//10000

=1584sq.m

multiply no of revolution to surface are of roller to find the area of play ground

ReplyDelete