Question

the perimeter of an equilateral triangle is 60 cm find the area of the triangle

Answer 1

hey ...


perimeter=60cm
side=20cm

area=√3/4 a^2
√3/4×400
100√3cm^2 is the ans

Answer 2

Let the side of the square be A

Perimeter of equillateral triangle = 3A

3A = 60
A = 20 CM

AREA =
$\sqrt{3} {(side)}^{2} \div 4 \\ (\sqrt{3} \times 20 \times 20) \div 4 \\ = 100 \sqrt{3} \\ = 100 \times 1.732 = 173.2 {cm}^{2}$
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