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Yuri [45]
2 years ago
14

type the correct answer in the box. The formula for the volume, V, of a cone having the radius, r, and the height, h, is shown b

elow. Write the formula to calculate the height, h.
Mathematics
2 answers:
BigorU [14]2 years ago
8 0

Answer:

You have to make h the subject using volume of cone formula :

v =  \frac{1}{3}  \times \pi \times   {r}^{2}  \times h

3v = \pi {r}^{2}  \times h

\frac{3v}{\pi {r}^{2} }  = h

h =  \frac{3v}{\pi {r}^{2} }

Phantasy [73]2 years ago
4 0

Answer:

h=3v/a^2

Step-by-step explanation:

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It take 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same Pace, how many days will
ludmilkaskok [199]

Answer:

The workers will need 10 days to finish the job.

Step-by-step explanation:

To solve this question we can use a compound rule of three. We have:

10 road workers -> 5 days -> 2h/day

2 road workers ->  x days -> 5h/days

The first thing we should do is analyze how the proportions between the variables work, if they're inversely or directly proportional. If we raise the number of workers we expect that the amount of days needed to finish the job lowers and if we raise the number of hours worked in a day we expect that the workers would need less days to finish the job. So we need to invert the fractions that are inversely proportional to the amount of days worked, then we have:

2 -> 5 -> 5

10-> x -> 2

x = (5*2*10)/(2*5) = 100/10 = 10 days

8 0
2 years ago
What is the value of E?
kozerog [31]
Hello!

∠E and the angle measuring 119 degrees (we'll refer to this as ∠A) can be classified as supplementary angles. Supplementary angles are two angles whose measures add to a sum of 180 degrees (a straight line). Therefore, we can conclude that sum of ∠E and ∠A is 180 degrees. We can use this information to create the following equation:

∠E + 119 = 180

Now subtract 119 from both sides of the equation:

∠E = 61

We have now proven that ∠E is equal to 61 degrees.

I hope this helps!
8 0
3 years ago
Read 2 more answers
What is happening to the pieces (units) when the numerator and denominator are getting larger?
ohaa [14]

Answer:

the number itself, (units) are getting bigger

Step-by-step explanation:

7 0
2 years ago
Can anyone give me a hand with 7
erma4kov [3.2K]
The answer is 3.5 grams. 500 Milligrams is equal to half a gram.
5 0
3 years ago
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What is the MAD of the data set?<br><br> {10, 9, 16, 5, 10}
Oksanka [162]
First, you'd find the mean of all the numbers by doing 10+9+16+5+10 = 50/5 = 10. Second, you'd subtract all values from the mean by doing 
16 - 10 = 6
10 - 10 = 0
10 - 10 = 0
10 - 9 = 1
<span>10 - 5 = 5
Lastly, finding the mean of all 5 numbers would be, 2.4! Hope this helps!! :D</span>
5 0
3 years ago
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