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What is the perimeter of a semi-circle? ...

What is the perimeter of a semi-circle?
I. The radius of the semi-circle is equal to half the side of a square.
II. The area of the square is 196 sq cm

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Knowledge Check

  • If the radius of a circle with area 154cm^(2) is equal to the side of a square. Then, the area of the square is

    A
    `47cm^(2)`
    B
    `49cm^(2)`
    C
    `48cm^(2)`
    D
    `54cm^(2)`

  • The radius of a circle is a side of a square. The ratio of the areas of the circle and the square is

    A
    `1 : pi`
    B
    `pi :1`
    C
    `pi :2`
    D
    `2 :pi`

  • If the perimeter of a circle is equal to that of a square, then the ratio of their areas is

    A
    `22:7`
    B
    `14:11`
    C
    `7:22`
    D
    `11:14`

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    If the perimeter of a semi-circle is 144 cm, find its radius (in cm).

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