Answer:

(1) 10cm, (2) 5cm

Step-by-step explanation:

An equilateral triangle= 3 equal sides

let the sides be x,x and x

x+x+x=30cm

3x=30cm

x=30/3 cm

x=10 cm

A hexagon= 6 equal sides

let the sides be x,x,x,x,x and x

x+x+x+x+x+x=30 cm

6x=30cm

x=30/6 cm

x=5cm

Answer:

I) 10 cm

ii) 5cm

Step-by-step explanation:

Equilateral triangle - 3 equal sides each equal side - x - perimeter is 3x = 30 cm

x = 10cm

Regular hexagon - 6 equal sides each equal side -x- perimeter is 6x = 30cm

x = 5cm