Math, asked by projectechobois, 3 months ago

Find the surface area of the pyramid.

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Answered by Anonymous

0

3 * ( 0.5 * 9 * 7.79 ) + area of equilateral triangle with side 9

Answered by brendanharkin

1

Answer:

Step-by-step explanation:

Surface area of a triangular pyramid =

Area of 1 triangle face = 1/2 base x perpendicular height= 4.5 x 7.79

Total of 4 faces so total area is 4 x 4.5 x 7.79 =140.22 m2

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