The longest side of the obtuse triangle is 7 cm and the other two sides of the triangle are 4 cm and 5 cm. Find the area of the triangle.

A

$$1\sqrt{3}$$ $$cm^{2}$$

B

$$6\sqrt{3}$$ $$cm^{2}$$

C

$$3\sqrt{2}$$ $$cm^{2}$$

D

$$4\sqrt{6}$$ $$cm^{2}$$