I believe the answer could be a variable
Ok so there is a kinda simple way to do this and that is by dividing when you divide you get 450.826... so the fan spins about 450 times hope that this helps you
This is a triangle prism, the base is a square and the four sides are equal triangles.
To find the surface area you need to first find the areas of the triangles, then the square, in the end you have to add them together.
Since we know the area of a triangle is 1/2bh we know that one if the triangle in the figure is
9*16/2=72(in^2)
there are four of these so we multiply it by 4
4*72=288(in^2 aka squared inches)
Then we need to find the area of the square. side * side=9*9=81 (in^2)
Add them together we get the surface area.
288+81=369 (in^2)
I’m not 100% sure but I think it’s D.
Step-by-step explanation:
hope it's. helpful........
