Question

what is the area of an equaltreal triangle each of whose measure side measure 18​

Answer 1

Answer:

$area = \frac{ \sqrt{3} }{4} {a}^{2} \\ \\ = \frac{ \sqrt{3} }{4} \times {18}^{2} \\ \\ = 81 \sqrt{3} \: \: {unit}^{2}$

Answer 2

Answer:

As it is a equlateral triangle

so the all sides are equal

then it is 18×18×18

which is 140