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Maths Quiz: Tafuta eneo lililotiwa kivuli

Discussion in 'Jukwaa la Elimu (Education Forum)' started by WA-UKENYENGE, Sep 12, 2012.

  1. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    [​IMG]
    Find the area of the shaded region!!
     
  2. King Kong III

    King Kong III JF-Expert Member

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    1715 sq cm.
     
  3. sop sop

    sop sop JF-Expert Member

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    ??????????????
     
  4. Captain22

    Captain22 JF-Expert Member

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    Find area of the whole figure which is a triangle (56*42*0.5) and a semi circle (35*35*22/7) the total will be 3101 cm square. From this minus the unshaded part which is a quarter of a circle (22/7*42*42*0.5) which is 1386 cm squire. You will remain with 1715 cm squire.
     
  5. King Kong III

    King Kong III JF-Expert Member

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    1.Find the area ya Nusu Duara(AC)
    2.Find the area of Triangle(ABC)
    3.Total Area=AC+ABC
    4.Find Area of Quarter Circle(BC)
    5.Shaded Area=Total-BC
     
  6. SMU

    SMU JF-Expert Member

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    1,714.78 sq cm
     
  7. Mwanamayu

    Mwanamayu JF-Expert Member

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    My worry hapo hakuna semi circle wala quarter circle - naona arc na parabolic shape (not really a semi circle tafuta centre ya hypotenuse halafu piga bikari utanielewa)!
     
  8. Watu8

    Watu8 JF-Expert Member

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    are you really serious? umeshindwa hata kufuatisha hizo point jamaa alizozibainisha....
    jaribu kukumbuka hesabu za maumbo STD 6 wala akili yako usiipeleke kwenye Adv. maths, hivyo unavyoviona vipo lakini havihusiki
     
  9. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    Did you mean square or squirrel? Anyway, nice try!
     
  10. s

    songoros Senior Member

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    Soln
    Find the area of quartercircle AB
    Π×42^2×1/4=1384.74 square cm=Area of unshaded part.
    Find length CB=
    √(56×56)+(42×42)=70CM.
    AREA OF TRIANGLE ABC
    56×42×1/2=1176squareCM.
    AREA OF HALFCIRCLE BC
    Π×35^2=(3846.5+1176)-(1384.74)=
    …area of shaded region=(345.086+1176)-(1384.74)=3637.76squareCM
     
  11. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    How did you your answer?
     
  12. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    Dimensionally your solution is invalid! Try again, hapo kwenye red.
     
  13. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    Error noted in finding the area of quarter circle, it should be 22/7*42*42*0.25
     
  14. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    You can actually use any approach, sema JF haina option ya kuweka integral symbol na option za kuandika equations!! MODs, tusaidieni kutuwekea hizi symbols za integral na equations watu wajimwage siyo siasa tu!
     
  15. platozoom

    platozoom JF-Expert Member

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    Hii inahusu demographic na mtawanyiko wa watu kwa kuanzia na maeneo ya uzalishaji mkubwa wa ndizi? Au ni mifumo ya kiutawala Duniani......kwamba kwa kadri tunavyoharibu mazingira ndivyo tunavyoifanya dunia yetu kuwa mahali hatari pa kuishi?

    Hebu nieleweshe concept ya swali niporomoshe majibu daaadeki
     
  16. s

    songoros Senior Member

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    check kwa makin mkuu.
     
  17. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    Mkuu nilikuwa sijakaona kakipeuo! Big up sana!!!
     
  18. WA-UKENYENGE

    WA-UKENYENGE JF-Expert Member

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    Mkuu hii ni part I, tukishapata jibu tutajiuliza maswali kama lako kusogea hatua ya mbele!
     
  19. SMU

    SMU JF-Expert Member

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    Hivi:[(Πx(BA-BC)x(BA+BC))+(4xBCxBA)]/8 where Π=3.1415926536, BA=56cm and BC=42cm
     
  20. m

    mwanamabadiliko JF-Expert Member

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    4th yr, engineering Udsm. The solution: The shaded area = total area- area of quarter circle= ((1/2x BCx AB) + (IIx AC^2)/2) - IIx AC^2/4 = 3100.2255 sqrcm- 1385.4sqrcm= 1714.4855 sqrcm
     
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