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lana66690 [7]
3 years ago
7

How do you write 3.27 as a decimal number rounded to the nearest thousandth

Mathematics
2 answers:
Tasya [4]3 years ago
8 0
That is already rounded to the nearest thousandth! 
shusha [124]3 years ago
8 0
I need more numbers unless 3.270 counts

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The radius of a spherical balloon is measured as 20 inches, with a possible error of 0.03 inch. Use differentials to approximate
soldi70 [24.7K]

Answer:

a) V = 33510.322\,in^{3}, b) A_{s} = 5026.548\,in^{2}, c) \% V = 0.450\,\%, \%A_{s} = 0.300\,\%.

Step-by-step explanation:

The volume and the surface area of the sphere are, respectively:

V = \frac{4}{3}\pi \cdot r^{3}

A_{s} = 4\pi \cdot r^{2}

a) The volume of the sphere is:

V = \frac{4}{3}\pi \cdot (20\,in)^{3}

V = 33510.322\,in^{3}

b) The surface area of the sphere is:

A_{s} = 4\pi \cdot (20\,in)^{2}

A_{s} = 5026.548\,in^{2}

c) The total differentials for volume and surface area of the sphere are, respectively:

\Delta V = 4\pi\cdot r^{2}\,\Delta r

\Delta V = 4\pi \cdot (20\,in)^{2}\cdot (0.03\,in)

\Delta V = 150.796\,in^{3}

\Delta A_{s} = 8\pi\cdot r \,\Delta r

\Delta A_{s} = 8\pi \cdot (20\,in)\cdot (0.03\,in)

\Delta A_{s} = 15.080\,in^{2}

Relative errors are presented hereafter:

\%V = \frac{\Delta V}{V}\times 100\%

\%V = \frac{150.796 \,in^{3}}{33510.322\,in^{3}}\times 100\,\%

\% V = 0.450\,\%

\% A_{s} = \frac{\Delta A_{s}}{A_{s}}\times 100\,\%

\% A_{s} = \frac{15.080\,in^{2}}{5026.548\,in^{2}}\times 100\,\%

\%A_{s} = 0.300\,\%

4 0
3 years ago
I need help with 3 math questions, please! 15 points!
GaryK [48]
3. The answer should be : Yes, the number is written in scientific notation.
4. the answer is : Yes, the number is written in scientific notation.
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5 0
2 years ago
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Artemon [7]
2x-2>-12
2x>-10
x>-5
hope this helps!
4 0
3 years ago
Graph a system of two equations that has a single solution of -2,-3
Amanda [17]
One possible system of two equations is ...
x = -2
y = -3 .
4 0
3 years ago
Tbh i’m too lazy to do it‍♀️
rusak2 [61]

Answer:

115.56 but since you have to round to the nearest km is 116

Step-by-step explanation:

3 0
3 years ago
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