21

Unit 12 Practice

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    #ANDY"OX !SABIRTHDAYPRESENTFORAFRIENDYOUBUY

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    7ATER$RAINAGE0IPE 4HElGUREATTHERIGHTSHOWSADRAINAGEPIPETHATISNEEDEDFORTHECONSTRUCTIONOFANEWDRIVEWAY4HEPIPEHASALENGTHOFFEETANDADIAMETERTHATISONETENTHTHATOFTHELENGTH2OUNDYOURANSWERSTOTWODECIMALPLACES

    )FTHEDESIGNISTOHAVEATLEASTONEFOOTOFPAVEMENTOVERTHEDRAINAGEPIPEWHATISTHEMINIMUMDEPTHOFTHEDITCH

    7HATISTHESURFACEAREAOFTHEDRAINAGEPIPE

    7HATISTHESURFACEAREAOFTHEDRAINAGEPIPEIFTHEDIAMETEROFTHEPIPEISONESIXTHOFTHELENGTHOFTHEPIPE

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    !PPROXIMATETHESLANTHEIGHTOFTHE'REAT0YRAMID

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    !PPROXIMATETHESURFACEAREAOFTHE'REAT0YRAMID

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  • n

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    #ONCRETE 4OCOMPLETEACONSTRUCTIONJOBACONTRACTORNEEDSCUBICYARDSOFCONCRETE4HECONTRACTORHASACONICALPILEOFCONCRETEMIXTHATMEASURESFEETINDIAMETERANDFEETHIGH

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    n 'REAT#IRCLE 4HECIRCUMFERENCEOFAGREATCIRCLEOFASPHEREIS:METERS7HATISTHESURFACEAREAOFTHESPHERE2OUNDYOURANSWERTOTWODECIMALPLACES

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    x -ULTIPLE#HOICE 7HICHSETOFDIMENSIONSCORRESPONDS

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    n 7HATISTHESCALEFACTOR

    7HATISTHERADIUSANDHEIGHTOFTHEMODEL

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    5SEYOURRESULTFROM%XERCISETOlNDTHEVOLUMEOFTHEMODEL

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