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olga nikolaevna [1]
2 years ago
15

How much will it cost to pour a circular slab 18 ft in diameter by 3 in. For a patio if the concrete costs $40.00 per cubic yard

?
Mathematics
1 answer:
sasho [114]2 years ago
4 0
A circular concrete slab is a cylinder. Vol = pi%2Ar%5E2%2Ah
in this cylinder:
r = 18%2F2 = 9 ft
h = 3%2F12 = .25 ft
:


Find the volume in cu/ft:
V = pi%2A9%5E2%2A.25
V = 63.61725 cu/ft
:
Change to cubic yds; (1 cu/yd = 27 cu/ft) and multiply by $40:
Cost = 63.61725%2F27 * 40
Cost = $94.25


In practical terms , they may require you to buy 3 cu/yds , which is $120


Yan na po
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swat32

Answer:

243π inches

Step-by-step explanation:

The volume of a cylinder is πr^2 * h

r = 9

h = 3

81π * 3 = 243π

8 0
3 years ago
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4 0
2 years ago
1. Let C be between D and E. Use the Segment addition Postulate to solve for v.
AURORKA [14]

By applying the segment addition postulate, the <u>value of v = 7</u>

  • According to the Segment Addition Postulate, it holds that if point C is between points D and E, therefore:

DC + CE = DE

  • Given that:

DC = 2v-15\\\\CE = 3v-8\\\\DE = 27

  • Therefore, by substitution, we will have the following equation:

(2v-15) + (3v-8) = 27

  • Open the bracket and solve for the value of v.

2v-15 + 3v-8 = 27

  • Add like terms

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5v - 23+ 23 = 27 + 23\\\\5v = 50

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v = 10

Therefore, using the segment addition postulate, the <u>value of v = 10</u>

Learn more about the segment addition postulate here:

brainly.com/question/1721582

7 0
3 years ago
Ben bought 4 pairs of jeams and a tshirt that cost 7 he had a cupon for 3 off the price of each pair of jeans amd spent a total
Nimfa-mama [501]
The dependent variable is the cost of the jeans since it depends on how many jeans Ben bought. An equation that represents the situation is (4j - 12) + 7 = 92
8 0
3 years ago
If x = 12 and y = 3, what is the value of x - y 2?<br><br> 81<br> 6<br> 3<br> 18
Marianna [84]

Answer:

3

Step-by-step explanation:

x-y^2

Let x = 12 y=3

12 - (3)^2

12 -9

3

7 0
3 years ago
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