1.

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

Answer»

By phythagorean triplet.

AB^2=AC^2+BC^2

(25*25)^2=7*7+BC^2

625=49+BC^2

BC^2=625-49

BC^2=576

BC=root of 576

BC=24.



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