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Fofino [41]
3 years ago
9

Help me please with this geometry

Mathematics
1 answer:
Tasya [4]3 years ago
6 0
All Triangles are equilateral ( each side = 4)


Area of a Triangle is (B x H)/2. B being the base ( 4) & H the altitude.

WE know that altitude in an equilateral triangle, H = ( side x√3)/2

So H= (4√3)/2 = 2√3

The area of one triangle = (4 x 2√3)/2 = 4√3

And for the 3 triangles the lateral area = (4√3) x 3 = 12√3
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