The perimeter is the sum of all sides. Using the formula: 55 = 20 + 14 + third side. Solving gives third side = 55 – 34 = 21 cm.
Class 6 NCERT Ganita Prakash Chapter 6 Perimeter and Area
class 6 Mathematics Textbook Chapter 6 question answer
Find the length of the third side of a triangle having a perimeter of 55 cm and having two sides of length 20 cm and 14 cm, respectively.
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The perimeter of a triangle is calculated by summing the lengths of all three sides. Given a perimeter of 55 cm and two side lengths of 20 cm and 14 cm, the equation becomes 55 = 20 + 14 + third side. Simplify to find the third side: 55 – (20 + 14) = 55 – 34 = 21 cm. This approach helps determine a missing side when the total perimeter and other side lengths are known.
For more NCERT Solutions for Class 6 Math Chapter 6 Perimeter and Area Extra Questions and Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-maths-ganita-prakash-chapter-6/