 # Area

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• Q1

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

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1296 m2

##### Explanation: • Q2

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

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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
Area of rectangle = length × breadth
= 2 × 1.50
= 3.00 sq. m

• Q3

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

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4 cm

##### Explanation: • Q4

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

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20 cm

##### Explanation: • Q5

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

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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