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  • Question
  • The altitude drawn to the base of an isosceles triangle is 8cm and the perimeter is 32cm. Find the area of the triangle?


  • Options
  • A. 50
  • B. 60
  • C. 70
  • D. 80

  • Correct Answer
  • 60 

    Explanation

    let ABC be the isosceles triangle, the AD be the altitude 

    Let AB = AC = x then BC= 32-2x       [because parameter = 2 (side) + Base] 

    since in an isoceles triange the altitude bisects the base so 

    BD = DC = 16-x 

    In a triangle ADC,  A C 2 = A D 2 + D C 2  

    x 2 = 8 2 + 16 - x 2   ? x = 10  

    BC = 32-2x = 32-20 = 12 cm 

    Hence, required area =  1 2 * B C * A D 1 2 * 12 * 10  = 60 sq cm


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    • C. 3 days
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    • Discuss
    • 2. 
      750.0003 ÷ 19.999 =?

    • Options
    • A. 49
    • B. 18
    • C. 22
    • D. 38
    • Discuss
    • 3. 
      105, 85, 60, 30, 0, - 45, - 90?

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    • 4. 
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    • A. 2 : 5
    • B. 3 : 5
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    • 6. 
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    • Options
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    • Options
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    • 8. 
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    • Options
    • A. 19.2
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    • Options
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    • E. None of these
    • Discuss
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    • Options
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