Answer:
146.6 yd².
Explanation:
The total surface area
= area of rectangular base + area of the 4 side triangles ( 2 pairs of congruent triangles)
= 7*8 + 2 * 1/2 * 6.2 * 7 + 2 * 1/2 * 8 * 5.9
= 56 + 6.2*7 + 8*5.9
= 146.6.
OOF thats pretty bad
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