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3 years ago

Can someone plsss help with these 2 questions thank u!!!

Mathematics

1 answer:

bixtya [17]3 years ago

4 0

#2: formula: V = (3.14) x radius (1/2 diameter) and height over 3

Answer is A

#3: Answer is 314.159 which rounds up to 314.160

Step by Step: easy

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Help me please! Don’t skup

scoundrel [369]

I won't skup.

We have an eight of a circle has area 9π sq in, so the total circle has area

πr² = 8(9π) = 72π

r² = 72 = 2(36)

r = 6√2 ≈ 8.485281374238571

Answer: A. 8.48 inches

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3 years ago

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Mr. rina has 7 glass figures . He will use 1 box to mail each glass figure to a customer . How many boxers does mr. rina need

77julia77 [94]

Answer:

Mr. Rina will need 7 boxes.

Step-by-step explanation:

Important information:

He has 7 glass figures and he will use 1 box per glass figure.

So, you need to do 7 divided by 1 because he will ship each package with 1 glass figure. 7 glass figures divided by 1 box is 1 box per glass figure.

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4 years ago

Factor:<br> 522<br> -<br> 28x + 32

Elden [556K]

Answer:

it is A or D but i pick D

Step-by-step explanation:

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3 years ago

A homogeneous rectangular lamina has constant area density ρ. Find the moment of inertia of the lamina about one corner

frozen [14]

Answer:

$I_{corner} =\frac{\rho _{ab}}{3}(a^2+b^2)$

Step-by-step explanation:

By applying the concept of calculus;

the moment of inertia of the lamina about one corner $I_{corner}$ is:

$I_{corner} = \int\limits \int\limits_R (x^2+y^2) \rho d A \\ \\ I_{corner} = \int\limits^a_0\int\limits^b_0 \rho(x^2+y^2) dy dx$

where :

(a and b are the length and the breath of the rectangle respectively )

$I_{corner} = \rho \int\limits^a_0 {x^2y}+ \frac{y^3}{3} |^ {^ b}_{_0} \, dx$

$I_{corner} = \rho \int\limits^a_0 (bx^2 + \frac{b^3}{3})dx$

$I_{corner} = \rho [\frac{bx^3}{3}+ \frac{b^3x}{3}]^ {^ a} _{_0}$

$I_{corner} = \rho [\frac{a^3b}{3}+ \frac{ab^3}{3}]$

$I_{corner} =\frac{\rho _{ab}}{3}(a^2+b^2)$

Thus; the moment of inertia of the lamina about one corner is $I_{corner} =\frac{\rho _{ab}}{3}(a^2+b^2)$

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3 years ago

-2 - (-4) to the power of two...how would I figure this out

PilotLPTM [1.2K]

There is a website on that

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3 years ago

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