An 80-pound bag of concrete mix will yield 0.6 cubic feet of concrete. each bag costs $4.98. an artist wants to make a concrete sculpture consisting of three cubes, one on top of the other. the cube at the base will be 3 ft x 3 ft x 3 ft. the next cube will be 2 ft x 2 ft x 2 ft. the third cube will be 1 ft x 1 ft x 1 ft. how much will the materials cost for the sculpture cost?

For the first cube => Volume = (length) (width )(height)

Volume = (3) (3 )(3) = 27 cubic ft.

Number of 80-lb bags needed = (27/0.6) = 45

Cost of one bag is $4.98

So cost of 45 bags = 45 bags x $4.98/bag = $224.1

For the second cube =>

Volume = (2) (2)(2) = 8 cubic ft.

Number of 80-lb bags needed = (8/0.6) = 13.333=13

Cost of one bag is $4.98

So cost of 13 bags = 13 bags x $4.98/bag = $64.74

For the third cube =>

Volume = (1) (1 )(1) = 1 cubic ft.

Number of 80-lb bags needed = (1/0.6) = 1.66=2

Cost of one bag is $4.98

So cost of 2 bags = 2 bags x $4.98/bag = $ 9.96

Material costs = 224.1 + 64.74 + 9.96

Materials cost for the sculpture = $298.8

figure c

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all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

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