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maria [59]
4 years ago
6

A copper pipe, used for plumbing from the water main to a house, is 4 meters long and has a circular cross-section 2.8 cm in dia

meter.
There is a 2 cm diameter hole in the center of the cross-section for the entire length of the rod. What is the volume of copper in the rod in cubic inches?

The density of copper is 559lb_m/ft^3 . What is the mass of the copper pipe in pounds?

what is the volume of copper in cubic inches?
Mathematics
1 answer:
topjm [15]4 years ago
8 0
The volume of the hose is equal to the difference of the areas of the inner and outer circles with area equal to pi d^2 / 4 multiplied by height of hose, 4 meters.  The annulus area is equal to 3.02 cm2.The volume is equal to 0.0012 cub, m .mass is <span>0.0012 </span>cub<span>, m times density. answer is 0.67 ft3.</span>
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The angle which is four times its complement is a. 60 b. 30 C. 45 d. 72​
grigory [225]

Answer:

The answer is D.72°

Step-by-step explanation:

hope this helps.

5 0
3 years ago
The amount of snow on the ground increased by 4 inches between 4 p.m and 6 p.m. If there was 6 inches of snow on the ground at 4
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6 0
4 years ago
Line JK passes through points J(–4, –5) and K(–6, 3). If the equation of the line is written in slope-intercept form, y = mx + b
4vir4ik [10]
The value of "b" is the y-intercept.

In order to figure out slope-intercept form you need 1 coordinate and the slope.
1) Find the slope, using the 2-point slope formula: "m= y2-y1 / x2-x1".
   ex. m= -5 - 3 / -4 - -6   (simplify)--->   m= -4

2) Fill in the blanks for point-slope formula: "y - y1 = m (x - x1)"
(choose one coordinate, it doesn't matter which one)
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3) Then use basic algebra to simplify.


7 0
3 years ago
Can Someone Help Me Please
iren2701 [21]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help me solve this pleaseee
Drupady [299]
Since they are equal to 90 degrees. (complimentary angles)

6x-11+7x+10= 90

Combine like terms.

13x-1= 90

Add one to both sides.

13x= 91

x= 7

Plug that into the b.

7(7)+10

49+10

59


I hope this helps!
~kaikers
3 0
4 years ago
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