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Answer: ≈318.54

Area

Step-by-step explanation:

A=lw+l[tex]\sqrt{(w/2)^2+h^2+w}[/tex][tex]\sqrt{(l/2)^2+h^2}[/tex][tex]12*8+12*\sqrt{(8/2)^2+10^2+8} *\sqrt{(12/2)^2+10^2} =318.54[/tex]

Answer:

304 square meters

Step-by-step explanation:

here is why,

area of a triangle formula is:

A = bh/2, so

12 * 10/ 2 = 60

we multiply this by two (for each triangle face with these dimensions) to get 120. then we do the same for the other two trangular faces.

8 * 11/2 = 44

we multiply by two again to get 88.

finally, for the base

12 * 8 because area of a rectangle formula is:

A = L * W

12 * 8 = 96

we get our final answer by adding everything up to get 96 + 88 + 120 = 304