CONCEPTS OF PERIMETER
For Class 4th And 5th
DEFINATION :
Perimeter is the length of the boundary of a plane figure .
FORMULAS :
1] Perimeter of a given shape = the sum of the length of all sides of the given shape .
2] Perimeter of a rectangle = 2 * (L + B )
3] Perimeter of a square = 4 * S
4] Perimeter of an equilateral triangle = 3 * S
SESSION – 1
LEVEL – 1
BASIC SUMS BASED ON PERIMETER
Find the perimeter of the following figures :
Q1]
Perimeter of the given shape = sum of the length of all the sides of the given shape
P = 2cm + 3cm + 2cm + 4cm +2cm +3cm
P = 16 cm
Q2]
Perimeter of the given shape = Sum of the length of all sides of the given shape .
P = 4cm + 4cm + 6cm + 2cm + 2cm + 2cm
P = 20cm
Q3]
Perimeter of the given shape = Sum of the length of all the sides of the given shape .
P = 2cm + 4cm + 3cm + 1cm
P = 10cm
Q4]
Perimeter of the given shape = Sum of the length of all sides of the given shape .
P = 4cm + 2cm + 2cm + 4cm + 2cm + 2cm
P = 16 cm
Q5]
Perimeter of the given shape = Sum of the length of all the sides of the given shape .
P = 2cm + 3cm + 2cm + 1cm + 4cm + 4cm
P = 16 cm
Q6]
Perimeter of the given shape = Sum of the length of all the sides of the given shapes .
P = 1cm + 3.5cm + 2cm + 1cm + 5.6cm + 1cm + 2cm + 3.5cm
P = 19.6cm
Q7]
Perimeter of the given shape = Sum of the length of all the sides of the given shape.
P = 70cm + 70cm + 50cm
P = 190cm
Q8]
Perimeter of the given shape = Sum of the length of all the sides of the given shape .
P = 600m + 500m + 400m + 500m
P = 2000m
Q9]
Perimeter of the given shape = Sum of the length of all the sides of the given shape .
P = 4cm + 3.5cm + 2.5cm
P = 10cm
Q10]
Perimeter of the given shape = Sum of the length of all the sides of the given shape .
P = 2.5cm + 2.5cm + 3.5cm + 3.5cm + 3.5cm + 3.5cm +4.5cm +4.5cm .
P = 28cm