Math, asked by sudhirbabuvirat, 4 months ago

perimeters of an equilateral
triangle is 21 cm .find it's area

Answers

Answered by siprasaec

2

Answer:

21.2176cm²

Step-by-step explanation:

perimeter=3*side=21

side=7cm

area of equilateral triangle=√3/4(side)²

Area=> √3/4*49

Area=> 12.25*√3=12.25*1.732

Area=> 21.2176cm²

Mark as brainliest..✌️

Answered by chinmayrajpillai

1

Answer:

21.2176cm²

Step-by-step explanation:

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