The semi perimeter of a triangle is adding up all of the sid

The semi perimeter of a triangle is adding up all of the side lengths and dividing by three. To find the circumference of the circle that circumscribes a triangle calculate pi (a/sin A).

Solution

f. False

perimeter of a traingle is sum of all sides

2s= a+b+c

semi perimeter of a triangle s =( a+b+c)/2

g TRUE

As we know circumference of a triangle is given by 2*pie*r

where r i sthe radius of the circle

A circle which circumscribes the triangle has radius R which is known as circum circle radius of triangle

From sine rule a/ sin(A) = b/sin(B) = c/sin(c) = 2R

circumference = pie*(2R) = pie*(a/sin(A) )