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Marina86 [1]
3 years ago
8

A cylindrical tin full of engine oil had a diameter of 12cm and a height of 14cm the oil is poured into a rectangular tin 16cm l

ong and 11cm wide.what is the dept of the oil in the tin​
Mathematics
1 answer:
jeyben [28]3 years ago
5 0

Answer:

The depth of oil in the tin is 9cm

Step-by-step explanation:

The first thing we need to do here is to calculate the volume of the cylindrical tin.

Mathematically, that would be;

V = pi * r^2 * h

now, r = d/2 = 12/2 = 6cm

h = 14 cm

Thus the volume would be;

V = 22/7 * 14 * 6^2 = 1,584 cm^3

Now, to find the the depth of the tin, we have to realize that the content of the cylinder should fill in the tin to a particular height.

Now let’s say the height of the tin is x, this means its volume which is l * b * h = 16 * 11 * x = 176x

So the depth x would be;

176x = 1584

x = 1584/176 = 9 cm

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What are inverted operations?​
Sunny_sXe [5.5K]

Answer:

The Definition of Inverse Operations

A pair of inverse operations is defined as two operations that will be performed on a number or. variable, that always results in the original number or variable. Another way to think of this is. that the two inverse operations “undo” each other.

Example: Addition and subtraction are inverse operations.

5 0
3 years ago
Find the value of this expression if x = -9
tatyana61 [14]

Answer:

-15

Step-by-step explanation:

(-9)^2+9/-9+3

81+9/-6

90/-6

-15

4 0
3 years ago
Read 2 more answers
For a sample of 35 items from a population for which the standard deviation is 20.5, the sample mean is 458. At the 0.05 level o
Anika [276]

Answer:

Value of test statistics = 2.30

Step-by-step explanation:

We are given that for a sample of 35 items from a population for which the standard deviation is 20.5, the sample mean is 458.

Also, Null Hypothesis, H_0 : \mu = 450

Alternate Hypothesis, H_1 : \mu\neq 450

The test statistics that will be used here is One sample t-test statistics;

              T.S. = \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

where, \bar X = sample mean = 458

             s = sample standard deviation = 20.5

            n = sample of items = 35

So, test statistics = \frac{458-450}{\frac{20.5}{\sqrt{35} } } ~ t_3_4

                            = 2.30

Therefore, the value of test statistics is 2.30 .

3 0
3 years ago
After increasing by 30% it became $520?
Alex
So from 100% you increased it by 30% to become 520
130%=540
percent means parts out of 100
130%=130/100=1.3
1.3 of whole=520
divide both sides by 1.3
whole=400

the number was 400
6 0
3 years ago
Read 2 more answers
HELP WILL MARK RIGHT ANSWER BRAINLIEST
kumpel [21]

Answer: The temperature decreased at a rate of 6 C per minute.

5 0
3 years ago
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