Apyramid has all sides that are equilateral triangles. each triangle has side lengths of 9 centimeters. if the surface area of the pyramid is 140.4 square centimeters, what is the slant height of the pyramid?

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine

there is nothing below so i cannot

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