• Perimeter is the distance covered along the
boundary forming a closed figure when you
go round the figure once.
(a) Perimeter of a rectangle = 2 (length +
breadth)
(b) Perimeter of a square = 4 x length of its
side
(c) Perimeter of an equilateral triangle = 3 x
length of a side
(d) Perimeter of a regular pentagon has five
equal sides = 5 x length of a sides
Answers
Answered by
2
Answer:
Question 1
Find the perimeter of each of the following figures:
Answer
Perimeter is the distance covered along the boundary forming a closed figure when you go round the figure once
Or
Perimeter is the sum of the sides of the polygon
(a)
Perimeter =
4
+
2
+
1
+
5
=
12
cm
(b)
Perimeter =
35
+
23
+
35
+
40
=
133
cm
(c)
Perimeter =
15
+
15
+
15
+
15
=
60
cm
(d)
Perimeter =
4
+
4
+
4
+
4
+
4
=
20
cm
(e)
Perimeter =
1
+
4
+
0.5
+
2.5
+
2.5
+
0.5
+
4
=
15
cm
(f)
Perimeter =
4
+
1
+
3
+
2
+
3
+
4
+
1
+
3
+
2
+
3
+
4
+
1
+
3
+
2
+
3
+
4
+
1
+
3
+
2
+
3
=
52
cm
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