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tino4ka555 [31]
3 years ago
7

The diameter of a cylindrical water tank is 12ft , and its height is 14ft . What is the volume of the tank?

Mathematics
1 answer:
Luda [366]3 years ago
7 0
So the formula for finding the area of a cylinder is 2 \pi r^{2}+2 \pi rh . r=radius. If we put the numbers into the equation it is 2 \pi 6^{2}+2 \pi 6(14) We get 6 as the radius because half of 12 is 6. 6 squared is 36 and 6*14= 84. So our equation is now 2 \pi36+2 \pi84. 2*pi=6.28318530718 but let's round that to 6.283. So now our equation is much simpler 6.283(36)+6.283(84). Just multiply them. 226.188+527.772= 753.96 is your final answer. 
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the length of a rectangle is 5cm longer than twice the length of the width. if the perimeter of the rectangle is 88, what Is the
o-na [289]
Width=x
length=2x+5
perimeter of a rectangle=2(length)+2(width)
We can suggest this equation:
88=2(2x+5)+2x

88=4x+10+2x
6x=88-10
6x=78
x=78/6
x=13

width=x=13
length=2x+5=2(13)+5=26+5=31

Answer: the width would be 13 cm.
4 0
3 years ago
Plz help due tomorrow
arsen [322]
Which decimal is value is equilvent to 1/5 is .2
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A cone and a cylinder have equal radius, r, and equal altitudes, h. If the slant height of the cone is l, then the ratio of the
77julia77 [94]

Given:

radius of cone = r

height of cone = h

radius of cylinder = r

height of cylinder = h

slant height of cone = l

Solution

The lateral area (A) of a cone can be found using the formula:

A\text{ = }\pi rl

where r is the radius and l is the slant height

The lateral area (A) of a cylinder can be found using the formula:

A\text{ = 2}\pi rh

The ratio of the lateral area of the cone to the lateral area of the cylinder is:

\pi rl\text{ : 2}\pi rh

Canceling out, we have:

\begin{gathered} =\frac{\pi rl}{2\pi rh} \\ =\text{ }\frac{l}{2h}\text{  or l:2h} \end{gathered}

Hence the Answer is option B

3 0
1 year ago
7 qt. of a 27% saline solution was mixed
mamaluj [8]

Answer:

24% saline

Step-by-step explanation:

Find how much saline is in both solutions:

7(0.27)

= 1.89

3(0.17)

= 0.51

Add this together:

1.89 + 0.51

= 2.4

Since there are 10 quarts in total, the concentration of the mixture can be found by dividing 2.4 by 10:

2.4/10

= 0.24

So, the concentration of the mixture is 24% saline

4 0
3 years ago
What is the relationship between the number of vertices in each polygon and the number of isosceles triangles?
marshall27 [118]

Answer:

You didn’t post the figures so I’ll guess C lol

Step-by-step explanation:

5 0
2 years ago
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