Perimeter of Irregular Shapes

Q.

Find the perimeter of the irregular shape given below.

1. 32 cm

2. 34 cm

3. 42 cm

4. 40 cm

Q. Distance around the boundary of a closed figure is called its ______.

1. area
2. perimeter
3. length
4. breadth

Q. 4 squares each of side 1 cm are cut out from a square of side 4 cm. The length of the boundary of the resulting shape is ___.

1. 9 cm
2. 12 cm
3. 16 cm
4. 20 cm

Q. Find the perimeter of the letter 'F'.

1. 20 cm
2. 18 cm
3. 25 cm
4. 23 cm

Q. If the area of each square in the grid is 1 $c{m}^2$, then which figure has an area of 14 $c{m}^2$ ?

1. Figure A
2. Figure B
3. Figure C
4. Figure D

Q.

Find the length of rectangular field of width $75m$and perimeter $360m$.

Q. Find the perimeter of the given shape.

Q. The perimeter of the figure given below is 30 cm. Find the length of the third side.

1. 13 cm
2. 15 cm
3. 17 cm
4. 19 cm

Q.

In order to plant four plants per metre, how many plants should you buy to edge your garden along the green path in the given figure?

1. 25

2. 35

3. 36

4. 30

Q.

Find the length and perimeter of the rectangle of area $900m^2$ and breadth $20m.$

Q.

Calculate the cost of fencing a plot of land as shown below at a rate of ₹ 5 per metre.

1. ₹ 80

2. ₹ 180

3. ₹ 100

4. ₹ 150

Q. If the perimeter of the given figure is 44 cm, what is the measure of the unknown side in the given figure?

Q. Find the perimeter of the given figure having three regular polygon.

1. 61 cm
2. 63 cm
3. 70 cm
4. 77 cm

Q. Find the perimeter of the figure given below:-

1. 30 cm
2. 36 cm
3. 39 cm
4. 48 cm

Q.

Find the perimeter of the irregular shape given below.

1. 32 cm

2. 36 cm

3. 42 cm

4. 40 cm

Q. Why do we use the grid method of calculating area, though it gives an approximate area?

Q. The cost of fencing a plot of land will be more if its perimeter is less.

1. True
2. False

Q.

The perimeter of a rectangular playground is $121.2m$. What is the length if its width is $25.4m$?

1. $38.6m$

2. $30.6$

3. $41.7m$

4. $35.2m$

Q. To tile a floor, we need to find the perimeter of the floor.

1. False
2. True

Q.

The perimeter of the figure given below is 15 cm. Find the length of the third side.

1. 6 cm

2. 11 cm

3. 5 cm

4. 4 cm

Q. What is the perimeter of the given polygon if each side of the polygon is 7 cm?

1. 48 cm
2. 49 cm
3. 50 cm
4. 51 cm

Q. Chef Locust Lime decides to build a fence around his rectangular little plot of land. But he only needs $3$ sides to build fencing because his land is budding against the farmhouse. He needs $120$ m on one side, $60$ on the other, and $120$ m on the third side.
How many feet of fencing would chef Locust Lime need to guard the farm?

1. $900$
2. $984$
3. $884$

Q.

The area of each square is in the given figure is 4 cm². What will be the area of whole figure?

1. 41 cm²
2. 40 cm²
3. 43 cm²
4. 42 cm²

Q. Take a thick paper sheet of length 14 cm and width 9 cm. You can also use an old postcard.
• What is its area? What is its perimeter?
• Now cut strips of equal sizes out of it.

Using tape join the strips, end to end, to make a belt.
• How long is your belt? _________
• What is its perimeter _________
• Whose belt is the longest in the class? ________

Q. To tile a floor, we need to find the perimeter of the floor.

1. True
2. False

Q. A 20 cm long thread is used thrice to cover the whole boundary of an irregular figure. What is the perimeter?

1. 50 cm
2. 60 cm
3. 40 cm
4. 20 cm

Q. A rope of length 5 m is tied on the boundary of the pond shown, but it could enclose only half of the boundary. What is the perimeter(in m) of the pond?​

1. 5
2. 10
3. 15
4. 20

Q. Match the polygons to their corresponding perimeters.

1. 22 cm
2. 20 cm
3. 24 cm

Q. If the lengths of three sides of a triangle are a, b and c, find the perimeter of the triangle.

1. a+b+c
2. 3(a+b+c)
3. 4(a+b+c)
4. 2(a+b+c)

Q. Slide the slider to the perimeter of the given figure in units.

1. 25