The perimeter of a triangle is 36 cm and the in radius of the triangle is 2.5 cm. What is the area of the triangle? Choose the correct choice:
A) 76	B) 88	C) 66	D) 55	E) 45
Area of a triangle = r * s   Where r is the in radius and s is the semi perimeter of the triangle.   Area of triangle = 2.5 * 36/2= 
<gadget id="calculator">2.5 * 36/2</gadget>
<output>45</output>
45 cm2   Answer:45
<result>E</result>
The perimeter of a triangle is 36 cm and the in radius of the triangle is 2.5 cm. What is the area of the triangle?