Area
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Q1
If the perimeter of a square field is 144 m, then the area of the field is
Marks:1Answer:
1296 m^{2}
Explanation:

Q2
A tabletop measures 2 m by 1 m 50 cm. Its area in square meter is
Marks:1Answer:
3.00 sq.m
Explanation:
For rectangular tabletop,
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 
Q3
If perimeter of a square is 16 cm, then the length of its side is
Marks:1Answer:
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
Marks:1Answer:
20 cm
Explanation:

Q5
If the length of a rectangle is doubled but its breadth is unchanged, then its new area will be
Marks:1Answer:
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