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Answer:
Apply Pythagoras theorem.
BC^2=AC^2-AB^2=13^2-5^2=12^2
BC=12
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Note:
Refer the attachment!
Given:
AABC is a right angled triangle.
• <B=90°
• AB=5cm
• AC=13cm
★To Find:
• BC=?
Solution:
It is given that AABC is a right angled triangle.
Therefore,
By Pythagoras therom,
(AC) ^ 2 = (AB) ^ 2 + (BC) ^ 2
(13) ^ 2 = (5) ^ 2 + (BC) ^ 2
169 = 25 + (BC) ^ 2
(BC) ^ 2 = 169 - 25
(BC) ^ 2 = 144
BC=12 cm
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