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Ne4ueva [31]
3 years ago
8

How do I find volume of a sphere with 10 as the diameter?

Mathematics
1 answer:
allsm [11]3 years ago
8 0

Answer:

166.67 pi

Step-by-step explanation:

V = 4/3 * pi * r^3

= 4/3 * pi * 5^3

= 166.67 pi

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3 years ago
A set of bookshelves rests on a hard floor surface on four legs, each having a cross-sectional dimension of 3.0×4.1cm in contact
tatiyna

Answer:

5.22\cdot 10^5 Pa

Step-by-step explanation:

The pressure exerted by an object is given by:

p=\frac{F}{A}

where

F is the magnitude of the force

A is the area of the surface perpendicular to the force

In this problem, the force is the weight of the books + the shelf, which is given by

F=mg

where

m = 262 kg is the total mass

g=9.8 m/s^2 is the acceleration of gravity

Substituting,

F=(262)(9.8)=2568 N

The area of the four legs is:

A=4(3.0 cm\cdot 4.1 cm)=4(12.3 cm^2)=49.2 cm^2 = 49.2\cdot 10^{-4} m^2

Therefore, the pressure exerted on them is:

p=\frac{F}{A}=\frac{2568}{49.2\cdot 10^{-4}}=5.22\cdot 10^5 Pa

7 0
3 years ago
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Answer:

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Step-by-step explanation:

$18 / week

goal is $90

18x = 90

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