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2 years ago

13

PLS HELP BRAINLIEST WILL BE GIVEN

1 answer:

Westkost [7]2 years ago

6 0

Denver has 7/19 of the dog food so the rest of the (I’m assuming dogs) have the remaining portion, 12/19

Engle and Fido have to split 12/19 into a ratio of 7:4

So... 12/19 has to split into 11 sectors of 1 representing 7:4

If Fido has 4 of the amount of food than

12 * 4 / 19 * 11 = 0.229665, 23%

Fido’s share is 23%

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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:

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b) The surface area of the sphere is:

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

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

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

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

Relative errors are presented hereafter:

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

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

$\% V = 0.450\,\%$

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

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

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

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