Question

Area of a equilateral triangle with perimeter 60m is

Answer 1

Answer:

Step-by-step explanation:

Side = 60/3 as all sides are equal

=20m

Using formula √3/4*s^2

We get 173.21

Answer 2

$semi \: perimeter \: = \frac{perimeter}{2} \\ = \frac{60}{2} \\ = 30$

$area = \sqrt{s(s - a)(s - b)(s - c)}$

$value \: of \: 1 \: side \: in \: triangle \\ = \frac{perimeter}{3} \\ = \frac{60}{3} \\ = 20$

$area = \sqrt{30(30 - 20)(30 - 20)(30 - 20) } \\ = \sqrt{30 \times 10 \times 10 \times 10 } \\ = \sqrt{30 \times 30} \\ = \sqrt{60} \\ = 7.745$

→→→ Slide for remaining part of the sum

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