Question

If the semi perimeter of a equalateral triangle is 10.5cm then its side is_____cm.

Answer 1

Answer:

If the semi perimeter of a equilateral triangle is 10.5cm then its side is 7 cm.

Step-by-step explanation:

Semi- perimeter of an equilateral triangle= 10.5

Therefore, Perimeter= 2(10.5) = 21 cm

Now, since it is an equilateral triangle all the sides will be equal, so

21/3

7cm.