Question

In a right-angled triangle, the length of the largest side is 10cm and that of another side is 8cm. Then the length of the third side is .

• A. 4 cm
• B. 5 cm
• C. 6 cm
• D. 8 cm

Answer 1

The correct option is C 6 cm

We know that if the given triangle is right-angled, then the sides follow Pythagoras theorem.

Let the length of the third side be x cm.

$⟹$ ${10}^2=8^2+x^2$
$⟹$ $100-64=x^2$

$⟹$ $x=6cm$