Example 7 The side of an equilateral triangle is 3.5 cm. Find its perimeter.
Perimeter = Sum of all sides
= 3.5 + 3.5 + 3.5
= 3 × 3.5
= 3 × 35/10
= (3 × 35)/10
= 105/10
= 10.5 cm
Thus,
Perimeter = 10.5 cm
Made by
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.