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ICE Princess25 [194]
3 years ago
13

The figure below shows the net of a triangular pyramid. The given height is rounded to the nearest hundredth. If all the triangl

es are equilateral, what is the surface area of the pyramid in square centimeters? HEIGHT: 4.33 cm BASE: 5 cm. *The net shows 4 triangles but I think one of them is the base of the triangle.*
Mathematics
1 answer:
Nataly [62]3 years ago
4 0

Answer: 43.3 square inches

Step-by-step explanation:

Formula for Triangle: A = bh/2

Key:

* = multiple

/ = divide

Fill in the formula with what you know:

A = bh/2

A = 5 * 4.33 / 2

A= 21.65 / 2 = 10.825 square inches

However, 10.825 is not our answer. 10.825 is the area of only one triangle. Since all four of the triangles are congruent (or the same) we can:

Add: 10.825 + 10.825 + 10.825 + 10.825 = 43.3 square inches

OR

Multiple: 10.825 * 4 = 43.3 square inches

Thus, the surface area of the pyramid is 43.3 square inches.

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