Question

In a right triangle ABC, the right angle is at B. What is the length of missing side in the figure?

• A. 5 cm
• B. 7 cm
• C. 12 cm
• D. 25 cm

Answer 1

The correct option is A

5 cm

Pythagoras theorem: In a right angled triangle,

$Hypotenus{e}^2$ = Sum of squares of other 2 sides

That is,

$c^2=a^2+b^2$

Here a = 4 cm and b = 3 cm,

So the missing side = c = $\sqrt{3^2+4^2}$ = 5 cm