Find the area of an isosceles right angle triangle whose each side Country Inn in the right angle is 8.4 CM

It is a right angled triangle, so we can use the Pythagoras theorem (h?=p?+b?)
Hence ,we get the length of the 3rd side.
(Can be done using a calculator)
And find the the perimeter .
(Here p=8.4
B=8.4
H=x)