If two legs of a right triangle containing right angle are 4cm and 10cm.Find the area of the triangle.Plzz help me its urgent!

Since two legs of right triangle containing right angle are 4 cm and 10 cm
Here taking base = 4 cm and height = 10 cm
So area of triangle = $\frac{1}{2}\times \mathrm{base}\times \mathrm{height} = \frac{1}{2}\times 4\times 10 = 20 {\mathrm{cm}}^2$