1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kirza4 [7]
3 years ago
8

a cylindrical pipe made of metal 3 m long is 3 cm if the internal radius of the pipe is 10 cm what is the volume of metal used i

n making the pipe​
Mathematics
1 answer:
cricket20 [7]3 years ago
5 0

Answer:

857.766cm^3

Step-by-step explanation:

Given data

Lenght = 3m

Internal radius r = 3m

External radius R= 10m

Volume of pipe= πr^2h

Volume of metal= External - Internal

Volume= πR^2h-πr^2h

Volume= πh(R^2-r^2)

Volume= 3.142*3(10^2-3^2)

Volume= 3.142*3(100-9)

Volume= 9.426*(91)

Volume= 857.766cm^3

Hence the volume of the metal is 857.766cm^3

You might be interested in
a man drives x miles the first day, y miles the second day, and z miles the third day. the averge mileage covered per day is
statuscvo [17]
The average mileage covered per day is = number of miles / number of days.

The average mileage covered per day is =(x+y+z)/3
6 0
3 years ago
143 everyone please everyone answers this ​
Law Incorporation [45]
Hi I hope you are all okay could someone help me with this math question thankyou !!!

y
∝
1
√
x
If
y
=
7
when
x
=
64
find,
x
when
y
=
8
4 0
3 years ago
Help!!! please!!! Confused!
OleMash [197]
∵AB=CB
∴∠BAC=∠BCA

∵AB bisect ∠MAT
∴∠MAB=∠TAB

Hope my answer helped u :)
4 0
3 years ago
Make ‘w’ the subject.
Romashka-Z-Leto [24]

Answer:

w = (cv +dy) / (cb - ad)

Step-by-step explanation:

Multiply through by c

aw + y = c(bw + v) / d                Multiply by d

d(aw + y) = c(bw + v)                  Remove the brackets

daw + dy = cbw + cv                  Subtract dy from both sides.

daw +dy - dy = cbw + cv -dy

daw = cbw + cv - dy                   Subtract cbw from both sides

daw - cbw = cbw - cbw + cv - dy

daw - cbw = cv -  dy                  Isolate W on the left.

w(da - cb) =  cv - dy                   Divide by cb - ad on both sides.

w = (cv - dy) / (ad - bc)                Answer


6 0
3 years ago
Classify the expression: 5x^2 + 2x - 6
svp [43]

Answer:

A second degree polynomial or a positive quadratic.

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • A bicyclist rides down a hill and her speed is increasing. Then she rides up a hill and her speed is decreasing. She stops to re
    15·2 answers
  • The dot plot below shows the drawing scores of some students : which statement best describes the shape of the data
    10·1 answer
  • someone plz help me. with promblems above extrax points. i will mark brainliest the first answer and the one that is expalined
    10·1 answer
  • Share £40 in the ratio 1:4 between Tim and Sam
    7·2 answers
  • Harper knows he is 50 yards from school. The map on his phone shows that the school is 2/3 inch from his current location. How f
    7·2 answers
  • A recipe requires ¼ cup of milk for each ⅙ cup of cheese. How many cups of cheese are needed for each cup of milk?
    9·1 answer
  • Please help The question is in the screenshot down below.
    14·1 answer
  • Please answer the questions
    10·1 answer
  • I have a 90.4% grade for math. I recently got a C on a 4 point assignment, what % grade am i getting on my assignment and what i
    7·1 answer
  • Please help!!!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!