Right Triangle Side Length: Find BC Given Sides 5 and 13
Given the triangle ABC, find the length BC
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Understand the problem
Given the triangle ABC, find the length BC
Step-by-step solution
To answer this question, we must know the Pythagorean Theorem
The theorem allows us to calculate the sides of a right triangle.
We identify the sides:
ab = a = 5
bc = b = ?
ac = c = 13
We replace the data in the exercise:
5²+?² = 13²
We swap the sections
?²=13²-5²
?²=169-25
?²=144
?=12
Final Answer
12 cm
Practice Quiz
Consider a right-angled triangle, AB = 8 cm and AC = 6 cm.
Calculate the length of side BC.
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