Question

The perimeter of an equilateral triangle of side 7 cm is --------------- (21, 10, 7)

Answer 1

Answer:

21 cm

Step-by-step explanation:

formula of perimeter of an equilateral triangle - 3x7

=21cm

Answer 2

Answer:

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Step-by-step explanation:

$Given , side \: of \: triangle \: , a = 7cm$

$Now , we \: know \\ \: that \: perimeter \: is \: the \: \\ sum \: of \: sides \: of \: triangle$

$= Perimeter \: of \: Triangle = a+a+a$

$=> 3a$

$= 3×7= 21$

$please \: like \: my \: answer \\ \&\\ mark \: me \: brainliest \: please \: :)))$

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