Worksheet on Perimeter of Various Shapes for Class 4

Solved Questions on Perimeter of Various Shapes

1. What are the lengths of the sides of an equilateral triangular flower orchard whose perimeter is 105 metres?

a) 25 m
b) 35 m
c) 45 m
d) 55 m

Answer: b) 35 m

Explanation: Perimeter of flower orchard = 105 m

Each side of an equilateral triangle is equal.

Therefore, the perimeter is equally divided among all three sides.

Length of each side of an equilateral orchard = 105 ÷ 3 
                                                                         = 35 m

2. How long should the border be to frame a photo that measures 19 cm in length and 14 cm in width?

a) 33 cm
b) 44 cm
c) 66 cm
d) 88 cm

Answer: c) 66 cm

Explanation: 

Length of print photo = 19 cm 

Breadth of print photo = 14 cm

Perimeter of photo frame = 2 (length + breadth) 
                                     = 2 × (19 + 14) 
                                     =  2 × 33 
                                     = 66 cm

3. What is the length of each side if the perimeter of each face of a cube is 30 cm?

a) 2.5 cm
b) 5.5 cm
c) 7.5 cm
d) 9.5 cm

Answer: c) 7.5 cm

Explanation: We know that each face of a cube is a sqaure.
So, perimeter of each face of a cube = Perimeter of square = 30 cm

Each side of a square is equal. Therefore, the perimeter of a square is equally divided among all four sides.

Length of each side = 30 ÷ 4
                                = 7.5 cm

4. One side of a regular octagon is 13 cm. What is its perimeter?

a) 84 cm
b) 94 cm
c) 104 cm
d) 114 cm

Answer: c) 104 cm

Explanation: Perimeter of the regular octagon = Sum of length of all sides 
                                                                     = 13 + 13 + 13 + 13 + 13 + 13 + 13 + 13 
                                                                     = 104 cm

OR

Perimeter of the regular octagon = 8 × (length of each side) 
                                               = 8 × (13)
                                               = 104 cm

5. Find the perimeter of the figure given below.

a) 43 cm
b) 47 cm
c) 51 cm
d) 57 cm

Answer: b) 47 cm

Explanation: Perimeter of the given figure = Sum of all lengths of sides
                                                                      = 6 + 6 + 5 + 4 + 6 + 2 + 1.5 + 1.5 + 7 + 8 
                                                                      = 47 cm