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If length of a rectangle is halved and b...

If length of a rectangle is halved and breadth is doubled then the area of the rectangle obtained remains same.

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Knowledge Check

  • If the length of a rectangle is doubled and the breadth is reduced to half, then the area of the new rectangle goes up by

    A
    `50%`
    B
    `0%`
    C
    `100%`
    D
    `150%`

  • If the length of a rectangle is increased by 50%, and the breadth is decreased by 30%, then the area of the rectangle increases by x%. Then the value of x is:

    A
    A.5
    B
    B.8
    C
    C.12
    D
    D.20

  • If the length of a rectangle is increased by 40%, and the breadth is decreased by 20%. then the area of the rectangle increases by x%. Then the value of x is:

    A
    20
    B
    12
    C
    16
    D
    8

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    The area of a square is thrice the area or a rectangle. If the area of the square is 225 cm and the length of the rectangle is 15 cm. what is the difference between the breadth of the rectangle. and the side of the square ?

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