Question

if the perimeter of an equilateral triangle is 20m, then find it's area​

Answer 1

Answer:

given perimeter of equilateral triangle is 20 cm.

side of a equilateral triangle is 20/3cm.

area of equilateral triangle is √3/4*a²=√3/4*200/9

50√3/9cm²

Step-by-step explanation:

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Answer 2

Answer:

2.857

Step-by-step explanation:

first sides are equal so perimeter is

20= s+s+s

s=6.6

by herons formula

root 3by 4 multiple by 6.6