Aptitude Practice Question and Answer

Q:

The area of an equilateral triangle is 25√3 cm2, then its perimeter is –

372 0

  • 1
    50√3 cm
    Correct
    Wrong
  • 2
    60 cm
    Correct
    Wrong
  • 3
    30 cm
    Correct
    Wrong
  • 4
    50 cm
    Correct
    Wrong
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Answer : 2. "60 cm "

Q:

if $$a+{1\over a}=5$$, then what is the value of $$a^3+{1\over a^3}$$

372 0

  • 1
    110
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    105
    Correct
    Wrong
  • 4
    -10
    Correct
    Wrong
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Answer : 1. "110 "

Q:

In ∆ABC, ∠A=90, AD is the bisector of ∠A meeting BC at D, and DE ⊥ AC at E. if AB = 10 cm and AC = 15 cm, then the length of DE, in cm, is:

372 0

  • 1
    8
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    6.25
    Correct
    Wrong
  • 4
    7.5
    Correct
    Wrong
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Answer : 2. "6"

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Answer : 3. "72°"

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Answer : 4. "3 : 2"

Q:

A circle circumscribes a rectangle with sides 16 cm and 12 cm. What is the area of the circle?

370 0

  • 1

    152 π cm2

    Correct
    Wrong
  • 2

    192 π cm2

    Correct
    Wrong
  • 3

    96 π cm2

    Correct
    Wrong
  • 4

    100 π cm2

    Correct
    Wrong
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Answer : 4. "

100 π cm2

"

Q:

The area of two equilateral triangles are in the ratio 25 : 36. Their altitudes will be in the ratio : 

370 0

  • 1
    36 : 25
    Correct
    Wrong
  • 2
    25 : 36
    Correct
    Wrong
  • 3
    5 : 6
    Correct
    Wrong
  • 4
    √5 : √6
    Correct
    Wrong
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Answer : 3. "5 : 6"

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