Answer:
A≈86.93m²
Step-by-step explanation:
vol. of triangular prism = lbh/2
vol. of rectangular prism = 18 of vol. of triangular prism
18x = 18 + 14x
4x = 18
x=4.5 ft
so vol. of rectangular prism = 6 × 4 . 5 × 3 = 81 ftcube
4 (1/16) = 4/16 = 1/4
(1/4) / 4 = 1/16 each day