The perimeter of an equilateral triangle with side 5 cm is:
10 cm
12 cm
20 cm
15 cm
Perimeter = 5 x 3 = 15 cm
Perimeter of an equilateral triangle whose side is 7.5 cm.
If the 3 sides of a triangle are 25 cm each, what is the perimeter of the triangle?
If two sides of a triangle are 8 cm and 6 cm and its perimeter is 26 cm. Find the third side of the triangle.