1.

If ΔABC is a right angled triangle with ∠ABC = 90º, and AC = 10 cm, BC = 8 cm, then length of AB is:1. 12 cm2. 6 cm3. 2 cm4. 18 cm

Answer» Correct Answer - Option 2 : 6 cm

Given:

In ΔABC

∠ABC = 90º 

AC = 10 cm 

BC = 8 cm 

Formula Used:

Pythagoras therom 

AC2 = AB2 + BC2

Calculation:

Using pythagoras therom

102 = AB2 + 82

100 - 64 = AB2

AB2 = 36

AB = 6 cm  

 ∴ The length of AB is 6 cm 



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