the perimeter of a triangle is 40 cm and the inradius of the triangle is 2.5 cm. what is the area of the triangle
Choose one
A) 72
B) 828
C) 50
D) 34
E) 35
<gadget id="calculator">(2.5 * 40) / 2</gadget>
<output>50</output>

<result>C</result>
the perimeter of a triangle is 40 cm and the inradius of the triangle is 2.5 cm. what is the area of the triangle
triangle_area(2.5, 40)
"explanation : area of a triangle = r * s where r is the inradius and s is the semi perimeter of the triangle . area of triangle = 2.5 * 40 / 2 = 50 cm 2 answer : option c"