MATHEMATICS HIGH SCHOOL

A cylindrical well is 20 meters deep and has a diameter of 1.5 meters. Approximately how many cubic meters of soil were dug out to make the well? (Use π = 3.14.)11.78 cubic meters
35.33 cubic meters
121.20 cubic meters
141.30 cubic meters

Answers

Answer 1
Answer: V = πr2h

V = 3.14 x 0.75 x 0.75 x 20

V = 35.33 cubic meters

Hope i will become the brainilest.
Answer 2
Answer:

Answer:

35.33 cubic meters

Step-by-step explanation:

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Describe how the formulas for a cone, cylinder and pyramid are derived. What are the similarities between the volume of a cone and pyramid?

Answers

the similarities

Vcylinder=hpir^2
Vcone=(1/3)hpir^2

Vpyramid=(1/3)hlw

notice that the cylinder has a circle base and circle top
cone tapers
when that happens, the cone is 1/3 of the whole

so the pyrmid is 1/3 the volume of a shape with same base area and same height

Ruth sees 11 flags in the park. Juno sees 4 more flags than Ruth. Sandra sees 9 more flags than Juno. How many flags does Sandra see.

Answers

The number of flags that Sandra sees will be 24 flags.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

Ruth sees 11 flags in the park. Juno sees 4 more flags than Ruth. Then the number of flags that Juno sees will be given as,

⇒ 11 + 4

⇒ 15

Sandra sees 9 more flags than Juno. Then the number of flags that Sandra sees will be given as,

⇒ 15 + 9

⇒ 24

The number of flags that Sandra sees will be 24 flags.

More about the Algebra link is given below.

brainly.com/question/953809

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First you add 11+4 which equals 15 then you add 15+9 which equals 24. So Sandra sees 24 flags

Half of a number decreased by 8 is 3

Answers


With the Brainly help you've gotten in the last 15 minutes or so,
you should be able to do this one now.

The mystery number . . . . . . .      M
Half of it . . . . . . . . . . . . . . . .  1/2 M
Half of it decreased by  8 . . .  1/2 M - 8

You said that's  3 .
So the equation you have to solve is

                                      1/2 M - 8  =  3

Add  8  to each side:      1/2 M       =  11

Multiply each side by  2 :      M       =  22

This is easier than the last one we ( I ) did.    

Which fractions are equivalent to -30/48 ?A.
-5/8

B.
-15/24

C.
10/-16

D.
− 35 over 65 star times

Answers

The answer is D

Because

-35/65 = -0.53


I hope that's help:)

Find the circumference of a pizza with a diameter of 10 inches

Answers

To find the circumference, multiply the diameter by pi.

3.14 x 10 = 31.4 inches
2πr is the formula of circumference so
2 times pi (3.14) is about 6.28 
radius half of the diameter so half of 10 is 5
so 5 times 6.28 is
31.4.

Fg - 9h = 10j, for g

Answers

fg-9h=10j\ \ \ \ |add\ 9h\ to\ both\ sides\n\nfg=10j+9h\ \ \ \ \ |divide\ both\ sides\ by\ f\n\n\boxed{g=(10j+9h)/(f)}
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