Question

Coordinate Geometry and Nets Unit Test
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Question
Use the image to answer the question.

An illustration of a triangular pyramid net shows an inverted equilateral triangle as the base, with sides measuring 17 millimeters. Three identical isosceles triangles extend from each side of the base. A dashed line bisects the central inverted triangle and is labeled as h equals 14.72 millimeters. The outer edges of the three isosceles triangles joined to the 17 millimeter base are all labeled as 11 millimeters. A dashed line bisects the outer triangle on the left and is labeled as h equals 10.99 millimeters.


Write the equation for the surface area of the triangular pyramid net shown in the image. Remember, SA=(1/2 base⋅height)+(1/2 perimeter⋅slant height)

Answer 1

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Answer 2

SA = (1/2 * 17mm * 14.72mm) + (3/2 * 11mm * 10.99mm)

Answer 3

SA = (1/2 * 17 * 14.72) + (3/2 * 11 * 10.99)