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A wooden clock is made in the shape of a triangular pyramid. The net of the pyramid is shown. A triangular pyramid. The base has a base of 8 inches and height of 6.9 inches. The 3 sides have a base of 8 inches and height of 7.4 inches. [Not drawn to scale] How much wood is needed to build the clock?

Respuesta :

Answer:

116.4 Square Inches

Step-by-step explanation:

Base Area of the Triangular Pyramid

[tex]=\dfrac12 \times 8 \times 6.9\\\\=27.6$ square inches[/tex]

Surface Area of the three sides

[tex]=3 \times \dfrac12 \times 8 \times 7.4\\\\=88.8$ square inches[/tex]

Therefore, the area of wood needed to build the clock

=27.6+88.8

=116.4 Square Inches

Answer:

C

Step-by-step explanation:

I hope it helps

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