Question

2. ABC is a triangle, right-angled at C. If AB = 25
cm and AC = 7 cm, find BC.
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Answer 1

Explanation:

did this by pythogers theoram

let be AB as hypotenious

AC AS PERPENDICULAR

AND BC AS BASE NOW

7²+BC²= 25²

49+BC²=625

BC²=625-49

BC²=576

BC =√576

BC=24

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Answer 2

Answer:

By applying PYTHAGORAS THEOREM,

AB^2 = AC^2 + BC^2

AB^2 = AC^2 + BC^2 (25)^2 = (7)^2 + (x)^2

625 = 49 + x^2

625 - 49 = x^2

576 = x^2

√576 = x

24 = x

Therefore, the length of BC is 24cm.