Answer:
surface area is 660 
Step-by-step explanation:
SURFACE AREA FORMULA IS 2πR( R + H)
We need to find the volume of the cone to first see how much total wheat we can fill. So,
V=(pi)r^2(h/3)
V=(pi)2^2(9/3)
V=(pi)4(3)
V=(pi)(12)
V=37.7 meters cubed.
If 1 cubic meter is equal to $232, we simply take the volume (37.7) and multiply that by the cost of 1 cubic meter ($232).
232x37.7= 8,746.40
----- It will cost $8,746.40 to fill up the silo with wheat -----
Answer:
Part a) Rectangle
Part b) Triangle
Step-by-step explanation:
Part A) A cross section of the rectangular pyramid is cut with a plane parallel to the base. What is the name of the shape created by the cross section?
we know that
When a geometric plane slices any right pyramid so that the cut is parallel to the plane of the base, the cross section will have the same shape (but not the same size) as the base, So, in the case of a right rectangular pyramid, the cross section is a rectangle
Part b) If a cross section of the rectangular pyramid is cut perpendicular to the base, passing through the top vertex, what would be the shape of the resulting cross section?
we know that
Cross sections perpendicular to the base and through the vertex will be triangles
