Question

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Answer 1

side of triangle = 15 cm

therfore the height of triangle = 15 × 15 × 15 = 3375

Answer 2

Step-by-step explanation:

We know the formula of the altitude of equilateral Triangle is

$\frac{ \sqrt{3} }{2} a = h$

Here,a is the side of the equilateral triangle

$\frac{ \sqrt{3} }{2} \times 15 = h \\ \\ \frac{15 \sqrt{3} }{2} = h \\ \\ 7.5 \sqrt{3} = h$

Now,putting the value of root 3 as 1.73(approx)

$7.5 \times 1.73 \: (approx) =h \\ \\ 12.975 \: \: \: {cm}^{2} \: (approx) = h$