Answer:
No options are correct.
Explanation: Density = Mass / Volume Here density of concrete = 145 pounds per cubic foot Volume = Area * Length of post A cement bridge post is 24 inches square = Length of post = 15 feet 9 inch = 15.75 feet Volume of post = 0.1667 * 15.75 = 2.63 Weight of concrete post = 145* 2.63 = 380.63 pounds.
No options are correct.
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Answer:
Option a,d and e are correct.
Step-by-step explanation:
Pyramid is the figure in which every base and apex forms triangle.
Polygon is two dimensional figure with straight lines.
Square is a figure in which all four sides are equal.
Solid is a three dimensional figure.
Polyhedron is a three dimensional figure with straight edges and sharp corners.
Prism is a polyhedron with parallel bases.
The given figure is:
Pyramid
Solid
Polyhedron
The median or the mode which is three, but not the average because there is an outlier in the set, which is 19 and would skew the data higher than it should be.