Answer:
Rect. Prism SA= 251. 75ft²
Cube SA= 8664in²
Cube SA= 6a²
Explanation:
SA= 2(lh+wh+lw)
Cube SA= 6a²
Rect. Prism SA
Assuming length(l)=11.5, width(w)=3.25 and height(h)=6
SA=2(lh+wh+lw)
=2(11.5×6+3.25×6+11.5×3.25)
=2(69+19.5+37.325)
=2×125.875
=251.75ft² (rounding is optional if you like)
Cube SA
SA=6a² (a referring to the edges/sides)
=6× 38²
=6×1444
=8664in²
Hope this helped.
