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Ronch [10]
3 years ago
11

A customer wants to put in a concrete driveway that is 10" thick. How much concrete would it take to pour a driveway that measur

es 18' by 42'? Express your answer in cubic yards.
Mathematics
1 answer:
stellarik [79]3 years ago
8 0

Answer: 22.59 yd^3

Step-by-step explanation:

First the volume of a cuboid whose measurements are:

L = length, W = width and T = thiknes is:

V = L*W*T.

We want to calculate the volume of a shape that is:

10'' thick, 18' wide and 42' long.

This notation is:

(') = feet

('') = inches

The first step is to write our 3 numbers in the same units, then we can use that:

1 inch = 0.083 ft.

Then 10 inches are equal to:

10'' = 10*(0.083 ft) = 0.83 ft = 0.83'

Then the volume of concrete needed will be:

V = 0.83ft*18ft*42ft = 627.48 ft^3

But we want this expressed in yd^3

1ft = 0.33 yd

then

1ft^3 = (0.33 yd)^3 = 0.036 yd^3

then 627.48 ft^3 can be written as:

627.48 ft^3 = 627.48*( 0.036 yd^3) = 22.59 yd^3

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What is the value of the function f(x) = 2x – 5 when x = 22? A17 B49 C105 D39
enyata [817]
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Interpret the slope for the situation: The number of people who worked for the railroads in the United States each year from 198
marysya [2.9K]

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3 0
3 years ago
Thomas is 4 years older than his brother william. in five years the sum of their age will be 24. how old is each boy?
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Let William be x years old.

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x + 5 + 9 + x = 24

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5 0
3 years ago
Can some please answer these for me!!? ​
aivan3 [116]

Answer:

- Right Angle Triangle – A Right triangle is a triangle in which one angle is a right angle (that is, a 90-degree angle). The relation between the sides and angles of a right triangle is the basis for trigonometry (opposite, hypotenuse, adjacent).

- Obtuse Triangle – An obtuse triangle is a triangle with one obtuse angle (greater than 90°) and two acute angles.

- Acute Triangle – An acute triangle is a triangle with three acute angles (less than 90°).  

12 - Right Angle Triangle

13 - Obtuse Triangle

14 - Acute Triangle

15 - Acute Triangle

16 - Right Angle Triangle

17 - Obtuse Triangle

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3 years ago
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