Question

11:05 AM
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Find the perimeter of the following figures
5 cm
5 cm
11 cm
11 cm
3 cm
4 cm
4 cm
a)
b)
9 cm
6 cm
7 cm
3 cm
2 cm
4 cm
▲
5 cm​

Answer 1

Answer:

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Mathematics

Chapters in NCERT Solutions - Mathematics, Class 6

Exercises in Mensuration

Question 12

Q6) Find the perimeter of each of the following shapes:

(a)A triangle of sides 3 cm, 4 cm, and 5 cm.

(b)An equilateral triangle of side 9 cm.

(c)An isosceles triangle with equal sides 8 cm each and third side 6 cm.

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Solution:

(a) The perimeter of triangle = Sum of all sides

= 3 + 4 + 5

= 12 cm

The perimeter of triangle is 12 cm.

(b) The perimeter of an equilateral triangle = Sum of all sides

= 9 + 9 + 9

= 27 cm

The perimeter of triangle is 27 cm.

(c) The perimeter if an isoceles triangle = Sum of all sides

= 8 + 6 + 8

= 22 cm

The perimeter of triangle is 22 cm.