Question

I need help with this thx i will mark you brainliest

Answer 1

Answer:

each side of equilateral triangle is 9 cm

Step-by-step explanation:

perimeter of triangle 1 = 6+10+11 cm

= 27cm

as it is given that,

perimeter of ∆ 1 = perimeter of equilateral ∆

so perimeter of equilateral triangle = side × 3

27 cm. = side × 3

side. = 27/3

side. = 9cm