Question

Triangle ABC is right-angled at vertex B. Calculate the length of BC if AB = 24 cm and AC = 25 cm

Answer 1

Answer:

AC=25cm

AB=24cm

ac²=ab²+bc²

25²=24²+bc²

625=576+bc²

625-576=bc²

49=bc²

7=bc [√49=7]

BC=7cm

Step-by-step explanation:

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Answer 2

Answer:

7cm

Step-by-step explanation:

Using Pythagorean Theorem,

(opp side) + (adj side) ² = hypotenuse

(AB)² + (BC)² = (AC)²

(24)² + (x)² = (25)²

576 + x² = 625

x² = 625 - 576

x² = 49

x = √49

x = 7

Therefore, AB equals 7cm

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