Question

find the area of equalateral triangle of side 10cm
​

Answer 1

Answer:

A

=

3

4

a

2

=

3

4

·

10

2

≈

43.30127

cm²

Answer 2

Answer:

25√3 cm^2

Step-by-step explanation:

$area \: of \: triangle = \frac{ \sqrt{3} {a}^{2} }{4}$

$here \: (a )= 10$

so, area of the equilateral triangle,

$= \frac{ \sqrt{3} \times {10}^{2} }{4}$

$= \frac{ \sqrt{3} \times 100 }{4}$

$= 25 \sqrt{3} \: {cm}^{2}$

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