Square root and cube root


  1. The value of √0.121 is ?









  1. View Hint View Answer Discuss in Forum

    0.121 = √0.1210
    = √1210/10000
    = √1210 / 100
    = 34.7 / 100

    Correct Option: C

    0.121 = √0.1210
    = √1210/10000
    = √1210 / 100
    = 34.7 / 100
    = 0.347.


  1. The cube root of .000027 is ?









  1. View Hint View Answer Discuss in Forum

    (.000027)1/3
    = (27 / 1000000)1/3
    = (33)1/3 / (106)1/3
    = 3 / 100

    Correct Option: B

    (.000027)1/3
    = (27 / 1000000)1/3
    = (33)1/3 / (106)1/3
    = 3 / 100
    = .03



  1. 4375 / √7 = ?









  1. View Hint View Answer Discuss in Forum

    4375 / √7 = √4375 / 7
    = √625

    Correct Option: C

    4375 / √7 = √4375 / 7
    = √625
    = 25


  1. If √y/169 = 54/39, then y is equal to ?









  1. View Hint View Answer Discuss in Forum

    y/169= 54/39
    ⇒ y/169 = (54/39) x (54/39)

    Correct Option: B

    y/169= 54/39
    ⇒ y/169 = (54/39) x (54/39)
    ∴ y= (54/39) x (54/39) x 169 = 324



  1. 112/√196 x √579/12 x √256/8 = ?









  1. View Hint View Answer Discuss in Forum

    Given Expression 112/√196 x √579/12 x √256/8
    =(112/14) x (24/12) x (16/8)

    Correct Option: D

    Given Expression 112/√196 x √579/12 x √256/8
    =(112/14) x (24/12) x (16/8)
    = 32