A concrete pillar has the shape of a cylinder. It has a diameter of 8 m and a height of 9 m. If concrete cost $87 per cubic meter, how much did the concrete cost for the pillar? Use 3.14 for pi and do not round your answer

It will cost $39,337.92 for the piller.

Step-by-step explanation:

Given that,

The diameter of the cylinder, d = 8 m

Height of the cylinder, h = 9 m

If concrete cost $87 per cubic meter, we need to find how much the concrete cost for the pillar.

The volume of the cylinder is given by :

Cost per cubic meter = $87

Cost for 452.16 m³ will be :

C = 452.16 × 87

C = $39,337.92

Hence, it will cost $39,337.92 for the piller.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

step-by-step explanation:

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