Math, asked by michellelodhi, 10 months ago

If the perimeter of an equilateral triangle is 9 cm. Then its area is ………….sq. cm.

Answers

Answered by Anonymous

0

3a=9

a=3

area=root 3/4×a²

=root3/4×3×3

=root3/4×9

=9 root 3/4

.......

Answered by singhparth128

0

A=√3/4a2

P=3a

Solving forA

A=√3(P)2/36

=√3·(9)2/36

≈3.89711

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