If the sides of a triangle are 4 cm, 9 cm and 13 cm, what is its area?	Choose the correct choice from the following choices.
A) 18  B) 20  C) 22  D) 26  E) 28
The triangle with sides 4 cm, 9 cm and 13 cm is right angled, where the hypotenuse is 13 cm.   18rea of the triangle = 1/2 * 4 * 9= 
<gadget id="calculator">1/2 * 4 * 9</gadget>
<output>18</output>
18 cm2   18nswer: Option 18
<result>A</result>
If the sides of a triangle are 4 cm, 9 cm and 13 cm, what is its area?