Go To Your Study Dashboard

Get Answers to all your Questions

header-bg

Q.7 In a right triangle $ABC,\angle B=90^{\circ}$

(b) If $AC=13\; cm,$ $BC=5\; cm,$ find $AB$

Answers (1)

best_answer

Using Pythagoras theorem,

$AC^2 = AB^2 + BC^2$

or $13^2 = AB^2 + 5^2$

or $169 = AB^2 + 25$

or $AB^2 =169 - 25= 144$

Prime factorisation of 144 gives :- $2\times2\times2\times2\times3\times3$

Hence, AB = 12 cm

Posted by

Devendra Khairwa

View full answer

Similar Questions

Trending Articles/News

anam-khan

NVS schools report 4,247 teaching and 1,666 non-teaching vacancies: Lok Sabha reply

Latest Question