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Vikentia [17]
3 years ago
10

Given ΔABC, AB = BC = AC . Area of ΔABC = 25 sqrt3 /4 cm. Find the perimeter of ΔABC.

Mathematics
1 answer:
zubka84 [21]3 years ago
3 0
This is an equilateral triangle of height a√3/2 where a is the side length. So the area is ½a.a√3/2=a²√3/4.
So a²=25 and a=5cm. Therefore the perimeter is 3a=15cm.
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<u><em /></u>

<u><em /></u>

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