Question

2. Find the perimeter of each of the following figures :
(1) An equilateral triangle of side 13 cm.
(1) A triangle of side 13 cm, 12 cm and 5 cm.
(n) An isosceles triangle with equal sides of 11 cm each and third side 8 cm​

Answer 1

Step-by-step explanation:

1) for equalateralTriangle

=(13 +13+13 ) cm

39 cm

2) ( 13 +12+5 ) cm

= 30 cm

3) for isosceles triangle

= ( 11 +11+8 ) cm

= 30 cm

Answer 2

Step-by-step explanation:

1.perimeter of Equilateral triangle is 3×side

3×13= 39

2.perimeter of triangle is sum of all side

p=13+12+5=30

3.perimeter of isosceles triangle is 2a+b

p=2×11+8 =30