Question

Semi perimeter of triangle is 20 cm and the length of the two sides is 12 cm each what is the length of the remaining side?

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

x = 28 cm

Step-by-step explanation:

perimeter = semi-perimeter * 2

perimeter =20*2 = 40

sum of all sides of a triangle  = perimeter = 40

12+x = 40

x = 28 cm