Question

in a right angled triangle, the two side of triangle are 3cm and4cm. find the length of third side

Answer 1

The hypotenuse is always the longest side: it is always the side opposite the right angle. The diagram opposite shows a right-angled triangle. The length of the hypotenuse is 5 cm and the other two sides have lengths 3 cm and 4 cm. In this diagram, a square, A, has been drawn on the 3 cm side.

Answer 2

side²+side²=hyoptenuse²
3²+4²=x²
9+16=x²
x=√25
therefore third side=5cm