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20 October, 23:11

Each of the faces (sides) has an area 66 square millimeters. Find the total surface area of the triangular pyramid.

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  1. 20 October, 23:40
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    There are 4 faces on a triangular pyramid

    so total surface area = 4 x area of each face = 4 x 66

    = 264 sq mm
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