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Lesechka [4]
3 years ago
13

9. Which of the following do you need to know to determine the surface area and volume of a sphere?

Mathematics
1 answer:
Alexxx [7]3 years ago
6 0

Answer:

A: radius of the sphere

Step-by-step explanation:

The formula for surface area is A = 4πr^2

With r being the radius and A the surface area.

For volume it is

V= (4/3)πr^3

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Answers for the 2 boxes please ​
pochemuha
(-3,-6) this is the answer you can also double check by plugging it into a calculator
6 0
3 years ago
Ruth has 6 chores to do. If each chore does not depend on the others, in how many different orders could she do the chores?
Mice21 [21]
First chore, 6 to choose from.
Second chore, 5 to choose from.
Third chore, 4 to choose from.
Fourth chore, 3 to choose from.
Fifth chore, 2 to choose from.
Sixth chore, 1 to "choose" from.
The total number of orders possible is the product
6*5*4*3*2*1=6!=720
3 0
3 years ago
Read 2 more answers
In 1815, Sophie Germain won a mathematical prize given by the Institut de France for her work on the theory of elasticity. The p
Fittoniya [83]

Answer:

gold price : $58.72/gram

$58,720 per kilo(1000) grams

Step-by-step explanation:

3 0
3 years ago
15. Find the force on an electron crossing a uniform magnetic field of intensity 0.5 T WILII
EleoNora [17]

Answer:

F = 8.48 x 10^{-18} N

Step-by-step explanation:

The force on an electron in a magnetic field can be determined by;

F = qvB Sin θ

where: e is the electron, v is its velocity, B is the measure of the magnetic field, and θ is the angle of its path.

Thus,

q = -1.6 x 10^{-19} C

v = 106 m/s

B = 0.5 T

θ = 90^{o}

So that,

F = 1.6 x 10^{-19} x 106 x 0.5

  = 8.48 x 10^{-18} N

The force on the electron crossing the uniform magnetic field is 8.48 x 10^{-18} N.

8 0
3 years ago
Jody has 4 red marbles, 6 blue marbles, and 9 yellow marbles. What is the ratio of red marbles to blue marbles?
Natalija [7]

Answer:

2:3

Step-by-step explanation:

First, create the ratio by putting the numbers together:

There are 4 red and 6 blue marbles:

4:6

Since both of these are divisible by 2, it can be simplified:

4:6

2:3

So, the ratio of red marbles to blue marbles is 2:3

8 0
3 years ago
Read 2 more answers
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