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morpeh [17]
3 years ago
6

I need help find the volume of the composite solid use 3.14 for pi

Mathematics
1 answer:
Evgen [1.6K]3 years ago
5 0

Answer:

222.312\:\mathrm{in^3}

Step-by-step explanation:

The composite solid consists of a cylinder and a cone. Therefore, its total volume will be the sum of the volumes of the cylinder and cone:

Volume of the cone: \frac{1}{3}\cdot 2^2\cdot 3.14\cdot 8.1 =33.912

Volume of the cylinder: 2^2\cdot 3.14 \cdot 15=188.4

Thus, the total volume of the solid is:

33.912+188.4=\boxed{222.312\:\mathrm{in^3}}

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Mariulka [41]
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4 years ago
Which ordered pair is the best estimate for the solution of the system of equations? y=−2/5x−2y=5x+1
lutik1710 [3]

Option a: (-0.5,-1.75) is the solution to the system of equations.

Explanation:

The equations are y=-\frac{2}{5} x-2 and y=5 x+1

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Simplifying , we get,

\begin{aligned}-10-5 &=25 x+2 \\-15 &=27 x \\-\frac{15}{27} &=x \\-\frac{5}{9}  &=x\end{aligned}

Substituting the value of x in y=5 x+1, we get,

\begin{aligned}&y=5\left(-\frac{5}{9}\right)+1\\&y=-\frac{25}{9}+1\\&y=-\frac{16}{9}\end{aligned}

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3 years ago
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If the next town is 5 cm, and 1 cm is 12.5 miles, we need to multiply 12.5 by 5.

12.5 * 5 = 62.5

<h3>So the next town is 62.5 miles away!</h3>

If you are asked to round this to the nearest whole number, it would be 63 miles.

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Answer:

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Step-by-step explanation:

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