Question

The side of an equilateral triangle is 3.5 cm.
find its perimeter..​

Answer 1

we know that in an equilateral triangle all sides are same.

perimeter= sum of three side

3.5+3.5+3.5= 10.5

Answer 2

Answer:

Step-by-step explanation:

Formula for equilateral triangle is

√3/4 x (side)^2

= √3/4 x 35/10 x 35/10

= 5.3 cm^2

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