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
Lilit [14]
2 years ago
15

A solid cylinder has a radius of 2 cm and a height of 7 cm. It has a density of 3.1 grams

Mathematics
1 answer:
timurjin [86]2 years ago
5 0

Answer:

Step-by-step explanation:

The first thing you need to do is find the volume.

r = 2cm

h = 7 cm

pi = 3.14

V = pi*r^2 *h

V = 3.14 * 2^2 * 7

V = 3.14 * 4 * 7

V = 87.92 cm^3

Next find the mass using the density formula

Density = mass / volume

Density = 3.1 grams / cm^3

Volume = 87.92 cm^3

3.1 = m / 87.92               Multiply both sides by 87.92

3.1 * 87.92 = m

m = 272.55

Note:

Technically There should be no decimal places. 3.1 is only 2 significant digits. The answer should be 270 grams.

You might be interested in
How do you write 4/5 as a percentage?<br><br><br> lol i know this is simple but im so... help
adoni [48]

Answer:

85%

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Best explained and correct answer gets brainliest.
Ahat [919]
The answer is C
short explanation: the two triangles are congruent so that would make BD equal to AC and if AC is 6 then BD is 6
hope this helps
5 0
3 years ago
Read 2 more answers
Lesley has $17 to spend, which she uses to buy a reference book. Write 2 points and solve an equation to show how much Lesley wi
Vikentia [17]

Answer:

LESLEY GETS ABSOLUTELY NOTHINGGGG

Step-by-step explanation:

6 0
3 years ago
Find the equation in standard form of the line passing through the points (2,-3) and (4,2)
mario62 [17]
The line passes through (2,-3) and (4,2).

Calculate the slope of the line.
m = (2+3)/(4-2) = 5/2

The equation of the line is therefore
\frac{y-2}{x-4} = \frac{5}{2}

Cross multiply.
2(y-2) = 5(x-4)
2y - 4 = 5x - 20
2y = 5x - 16
Rewrite as
5x - 2y = 16

Answer: C. 5x - 2y = 16

8 0
3 years ago
A pool is comprised of a rectangle with 2 semicircles on the ends.
pychu [463]

Answer:

Step-by-step explanation:

The formula for determining the area of a rectangle is expressed as

Area = length × width

Length = 100 m

Width = 52 m

Area of rectangle = 100 × 52 = 5200 m²

A semicircle is half of a circle

The formula for determining the area of a semicircle is

Area = 1/2 × πr²

Diameter = 52 m

Radius = diameter/2 = 52/2

Radius = 26 m

The area of each semicircle is

1/2 × 3.14 × 26² = 1061.32 m²

The area of the surface of the pool is

1061.32 + 1061.32 + 5200 = 7322.64 m²

6 0
3 years ago
Read 2 more answers
Other questions:
  • A puppy and a kitten are 180 meters apart when they see each other. The puppy can run at a speed of 25 m/sec, while the kitten c
    15·2 answers
  • Given a right prism where p is the perimeter of the base, h is the height, BA is the area of the bases, and LA is the lateral ar
    7·2 answers
  • Divide 9x ^ 3 + 18x ^ 2 - 13x + 5 by 3x - 1 using division and write the division in the form P = DQ + R
    11·1 answer
  • PLEASE HELP MEEEEEE!!!!!
    12·2 answers
  • Write the equation of the line with a slope of 1/5 that passes through the point (20,5)
    7·1 answer
  • 1. Student ID number at a certain University are made up of a letter, followed by six 1-digit
    6·1 answer
  • PLEASEE IM GIVING BRAINILST JUST PLEASE HELPP ME!!John and Hank work as gift wrappers at a toy store. In 4 minutes, John can wra
    10·2 answers
  • Someone talk to me please ​
    14·2 answers
  • Mrs. Thomas is planning a business trip. she lives in Austin and will be driving through San Antonio to Laredo, the distance bet
    8·1 answer
  • If you want to connect your home network to the internet, you will need a ________ in addition to a modem.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!