An isosceles right triangle has area 8 cm^{2 }. Find the length of its hypotenuse.
Area = 1/2a^{2 }⇒ 1/2a^{2} = 8
⇒ a^{2 }= 16 cm ⇒ a = 4 cm
Hypotenuse = √2a = √2.4 = 4√2 cm.