Maths-
General
Easy
Question
A triangle has one side of 11 inches and another of 15 inches. Describe the possible lengths of the third side.
Hint:
- Triangle inequality theorem
- According to this theorem, in any triangle, sum of two sides is greater than third side,
- a < b + c
- b < a + c
- c < a + b
- while finding possible lengths of third side use below formula
- difference of two side < third side < sum of two sides
The correct answer is: Hence, all numbers between 4 and 26 will be the length of third side.
Step-by-step explanation:
Given:
In triangle, sides are 11 inches and 15 inches.
a = 11 inches, b = 15 inches.
Step 1:
Find length of third side.
According to triangle inequality theorem,
c < a + b
∴ c < 11 + 15
c < 26
Step 2:
difference of two side < third side < sum of two sides
b – a < c < a + b
15 – 11 < c < 11 + 15
4 < c < 26
Hence, all numbers between 4 and 26 will be the length of third side.
Final Answer:
Hence, all numbers between 4 and 26 will be the length of third side.
Step 2:
difference of two side < third side < sum of two sides
Hence, all numbers between 4 and 26 will be the length of third side.
Final Answer:
Hence, all numbers between 4 and 26 will be the length of third side.
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