Question

15.ABC is a triangle, right angled at C. If AB = 25 cm and AC = 7 cm Find BC.
(2 Points)
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Answer 1

Step-by-step explanation:

$ab { }^{2} = bc { }^{2} + ac {}^{2} \\ 25 {}^{2} = bc {}^{2} + 7 {}^{2} \\ 625 = bc {}^{2} + 49 \\ 625 - 49 = bc {}^{2} \\ \\ \sqrt{576 =} \: bc \: \\ bc = 24$