The perimeter of a triangle is 22 cm and the inradius of the triangle is 3.5 cm. What is the area of the triangle?
Choose one:	A) 22	B) 35	C) 77	D) 54	E) 38
Area of a triangle = r * s   Where r is the inradius and s is the semi perimeter of the triangle.   Area of triangle = 3.5 * 22/2= 
<gadget id="calculator">3.5 * 22/2</gadget>
<output>38.5</output>
38.5 cm2   Answer:38
<result>E</result>
The perimeter of a triangle is 22 cm and the inradius of the triangle is 3.5 cm. What is the area of the triangle?