The perimeter of the figure ABCDEFGHIJ is
(a) 60 cm
(b) 30 cm
(c) 40 cm
(d) 50 cm
Solution:
We have to find the perimeter of the figure ABCDEFGHIJ
Perimeter = sum of all sides
So, perimeter = AB + BC + CD + DE + EF + FG + GH + HI + IJ + AJ
From the figure,
DE = BC + AJ +& IH + FG
Now, perimeter = 6 + BC + 4 + 20 + 2 + FG + 5 + 3 + AJ
= 6 + 4 + 20 + 2 + 5 + 3 + BC + FG + AJ
= 10 + 20 + 10 + DE
= 20 + 20 + 20
= 60 cm
Therefore, the perimeter of the given figure is 60 cm.
✦ Try This: Find the perimeter of the rectangle with length 10 cm and breadth 8 cm.
Given, length and breadth of the rectangle are 10 cm and 8 cm.
We have to find the perimeter of the rectangle
Perimeter of rectangle = 2(length + breadth)
= 2(10 + 8)
= 2(18)
= 36 cm
Therefore, the perimeter of the rectangle is 36 cm.
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 11
NCERT Exemplar Class 7 Maths Chapter 9 Problem 33
The perimeter of the figure ABCDEFGHIJ is (a) 60 cm, (b) 30 cm, (c) 40 cm, (d) 50 cm
Summary:
The perimeter of the figure ABCDEFGHIJ is 60 cm.
☛ Related Questions:
- The circumference of a circle whose area is 81πr², is (a) 9πr, (b) 18πr, (c) 3πr, (d) 81πr
- The area of a square is 100 cm². The circumference (in cm) of the largest circle cut of it is (a) 5 . . . .
- If the radius of a circle is tripled, the area becomes (a) 9 times, (b) 3 times, (c) 6 times, (d) 30 . . . .