If the sides of a triangle are 21 cm, 19 cm and 5 cm, what is its area?	Choose the correct choice:
A) 42.25 cm2	B) 57.5 cm2	C) 42.5 cm2	D) 47.5 cm2	E) 52.5 cm2
The triangle with sides 21 cm, 19 cm and 5 cm is right angled, where the hypotenuse is 21 cm.   Area of the triangle   = 1/2 * 19 * 5= 
<gadget id="calculator">1/2 * 19 * 5</gadget>
<output>95/2 = around 47.5</output>
47.5 cm2   Answer: 47.5 cm2
<result>D</result>
If the sides of a triangle are 21 cm, 19 cm and 5 cm, what is its area?