Answer:
Step-by-step explanation:
surface area=area of sides +area of top and bottom
=2(4+5)×8+2×(4×5)
=2[(9×8)+20]
=2[72+20]
=2×92
=184 m²
You can use the trigonometric identity

.

The requirement that

eliminates -1/6 from being another solution.
It would be 6(4a2 - 3)
you would factor out just the 6 because the 18 doesn’t a a term with it like 34a2 does. then just divide normally to get ur answer 6(4a2 - 3)
Hi there!
A line segment, hence its name, is basically a part of a line. It has two endpoints and does not continue forever in any directions.
Hope this helps!