Question

Find the area of an equilateral triangle having side 8 cm.Find the area of an equilateral triangle having side 8 cm.​

Answer 1

Answer:

$the \: area \: of \: equilateral \: triangle = \sqrt{3} {a}^{2} \div 4 \\ side = 8cm = a \\ then \: area = \sqrt{3} \times {8}^{2} \div 4 \\ = \sqrt{3} \times 64 \div 4 \\ = \sqrt{3} \times 16 \\ then \: area = 16 \sqrt{3} {cm}^{2}$

Answer 2

$\huge\large \fbox \green{Given :}$

A equilateral triangle have side 8cm

$\huge\large \fbox \green{Find :}$

• Area of equilateral triangle

$\huge\large \fbox \green{Solution :}$

$Area \: of \: equilateral \: triangle \\ \\ \implies \frac{ \sqrt{3} }{4} \: \times {side} \: {}^{2} \\ \implies \: \frac{ \sqrt{3} }{4} \times (8) {}^{2} \\ \\ \implies \frac{ \sqrt{3} }{4} \times \: 64 \: \\ \\ \implies\sqrt{3} \times 16 \\ \\ \implies \: 27.71cm {}^{2}$

.Hence , the Area of equilateral triangle is 27.71 cm²