Question

8. The sides of an equilateral triangle measure 12 cm. Then, its semi-perimeter s = ____ cm. (a) 52 (b) 24 (c) 18 (d) 26​

Answer 1

Answer:

b) 18

Step-by-step explanation:

Side=12

Perimeter of triangle= 3×side

=3×12

=36

semi perimeter= 36/2

= 18