Here is a good one. :)
A manufacturer is designing special packaging for a product in the shape of a truncated pyramid. A truncated pyramid is a pyramid with the top cut off. The model he is building is included. The bases are not regular figures. The lateral sides are trapezoids. The height of each trapezoid face is 12 cm. Determine the amount of material needed to build the model (assume no overlap on the sides).
Stacey Warren - Expert brainly.com
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normally i would agree but in this case you dont know the height of the triangular faces, only the height of the trapezoids
use area of trapezoid formula (1/2*h(b1+b2)) to find area of all 3 trapezoid faces then add the 2 right triangle areas (top and bottom)
i get 246
yes I have the formula for the trapezoid
Ill check mine
6(3+6) + 6(4+8) + 6(5+10) +2(3) + 4(6) = Sa from my point of view
54 + 72 + 90 + 6 +24
120 + 126 = 246
i just got that... yes it matches both :)
and that is how much material is needed .....