In a right triangle ABC, angle B is 90 degrees and AB = 12cm and BC = 5 cm. Find the value of AC.

(a) 12 cm

(b) 15 cm

(c) 13 cm

(d)14 cm


Given: A right angle ABC such that angle B is 90 degrees and AB = 12cm and BC = 5 cm.


To find: We have to find the value of AC.


Solution: 

Now using Pythagoras theorem:


AC2 = AB2 + BC2


AC2 = 122 + 52

AC2 = 144 + 25

AC2 = 169


AC = 169


AC = 13 cm


Updated on: 10-Oct-2022

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