Question

find the length of a side of an equilateral triangle whose perimeter is 3 metre 12 centimetre

Answer 1

Let the side of equilateral triangle be a ;
Perimeter = 3m 12cm
a+a+a = (300+12) cm
3a = 312
a = 312/3 cm
= 104 cm

length of side = 104 cm or 1m 4cm