Question

Please help being timed!!! Given: △ABC AB=BC=AC Area of △ABC= 25 3 4 cm2 Find: The perimeter

Answer 1

Answer:

15 cm

Step-by-step explanation:

The area of an equilateral triangle is:

$\frac{\sqrt{3} }{4}a^2$, where a is the length of one side.

We can find the value of a (the length) by:

$\frac{25\sqrt{3} }{4} = \frac{\sqrt{3} }{4}a^2$

$a^2 = 25$

a = 5, so the side length of this triangle is 5 cm.

The perimeter of an equilateral triangle will be 3 times the length.

$3\cdot5=15$

Hope this helped!

Answer 2

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