B ( I think, not sure ) hope this helps
Answer:
Step-by-step explanation:
The point at the terminal side of an acute angle is given by .
That is,
and .
Let r be the length of line segment drawn from the origin to the point and is given by the formula:
Substituting the values of x and y into r,
Thus,
Also, is given by:
Substituting values of x and r,
Since a cube has all equal sides, its surface area is 6 time the area of a single side. Each side has an area of a perfect square which is just the side length squared so:
A=6s^2 so if the edge length is 4.5m
A=6(4.5^2)
A=6(20.25)
A=121.5 m^2