Area

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  • Q1

    If the perimeter of a square field is 144 m, then the area of the field is

    Marks:1
    Answer:

    1296 m2

    Explanation:

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  • Q2

    A table-top measures 2 m by 1 m 50 cm. Its area in square meter is

    Marks:1
    Answer:

    3.00 sq.m

    Explanation:

    For rectangular table-top,
    Length = 2 m, breadth = 1 m 50 cm
    = 1 m + m (since, 1 cm = m)
    = 1 m + 0.50 m
    = 1.50 m
    So, breadth = 1.50 m
    Area of rectangle = length × breadth
    = 2 × 1.50
    = 3.00 sq. m

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  • Q3

    If perimeter of a square is 16 cm, then the length of its side is

    Marks:1
    Answer:

    4 cm

    Explanation:

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  • Q4

    The perimeter of a rectangle is equal to 80 cm. If the breadth of the rectangle is 20 cm, then its length is

    Marks:1
    Answer:

    20 cm

    Explanation:

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  • Q5

    If the length of a rectangle is doubled but its breadth is unchanged, then its new area will be

    Marks:1
    Answer:

    doubled.

    Explanation:

    Area of rectangle = length × breadth

    Now the length of the given rectangle is doubled.

    Hence, Area = (2 × length) × breadth

    = 2 × (length × breadth)

    = 2 times the previous area

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