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
Darya [45]
3 years ago
14

The density of a certain type of paint is 1.2 grams per cubic centimeter. A garage door that is 3 meters tall and 7 meters wide

is to be painted with a 1-millimeter-thick coat of paint (on the outside only). What is the mass (in grams) of the paint that will be needed to paint the door?
Mathematics
1 answer:
Naily [24]3 years ago
5 0
We know that
density=mass/volume
solve for mass
mass=density*volume

step 1
find the area of the garage door in cm²<span>
Area=300*700------> 210000 cm</span>²

step 2
find the volume of the paint
Volume=area*thick
thick=1 mm-----> 0.1 cm
Volume=210000*0.1-----> 21000 cm³

step 3
find the mass
mass=density*volume
density=1.2 g/cm³
volume=21000 cm³
mass=1.2*21000-----> 25200 grams

the answer is
25200 grams
You might be interested in
LK is tangent to circle J at point K. Circle J is shown. Line segment J K is a radius. Line segment K L is a tangent that inters
Evgen [1.6K]

Answer:

(B)r=\dfrac{85}{12}

Step-by-step explanation:

Given a circle centre J

Let the radius of the circle =r

LK is tangent to circle J at point K

From the diagram attached

  • LX=6
  • Radius, XJ=JK=r
  • LK=11

Theorem: The angle between a tangent and a radius is 90 degrees.

By the theorem above, Triangle JLK forms a right triangle with LJ as the hypotenuse.

Using Pythagoras Theorem:

(6+r)^2=r^2+11^2\\(6+r)(6+r)=r^2+121\\36+6r+6r+r^2=r^2+121\\12r=121-36\\12r=85\\r=\dfrac{85}{12}

The length of the radius, r=\dfrac{85}{12}

8 0
3 years ago
Read 2 more answers
Y+2=1/3 (x+1) please can you help
miskamm [114]

Equation:

y + 2 = 1/3(x+1)

Assuming you are solving for Y:

y + 2 = 1/3(x) + 1/3(1)

(y + 2) - 2 = (1/3x + 1/3) - 2

y = 1/3x + 1/3 - 2

<u>y = 1/3x - 5/3</u>

7 0
3 years ago
Please need help asap!!
kirill [66]

The answer is 5 hope that helps

5 0
3 years ago
Lila decided to make more baked goods for the bake sale. She used 1/8 lb less flour to make bread than to make cookies. She used
lord [1]

Answer:

Ok so we are trying to find out how much flour she used to make brownies so we already know that she used 1/2 flour to make bread and She uses 1/8 flour less flour to make bread than to make cookies so if we add 1/2 and 1/8 we will get the amount of flour she used to make the cookies so 1/2 + 1/8 = 5/8 so now that we have the amount of flour she used to make the cookies  we know that that is 1/4 more flour than brownies so if we subtract 5/8 by 1/4 we will get are answer to how much flour she uses to make brownies so 5/8 - 1/4 = 3/8 and that's your answer do you understand?

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
776 kilometers in 56 hours = 679 kilometers in
storchak [24]
The answer is 49 hours
4 0
3 years ago
Other questions:
  • Choose the correct simplification of the expression a6b3/a4b2
    13·1 answer
  • B3 = 1,000<br> PLEASE ANSWER !!!!!!!!!!!!!!
    5·1 answer
  • Which person will have more money in his or her savings account after five weeks?
    7·1 answer
  • The measures of the interior angles of a pentagon are 2x,6x,4x-6,2x-16 and 6x+2. What is the measure, in degrees, of the largest
    6·1 answer
  • Overnight, the temperature in Chicago was just
    7·1 answer
  • On the first day of spring, an entire field of flowering trees blossoms. The population of locusts consuming these flowers rapid
    10·1 answer
  • I WILL GIVE BRAINLIST
    11·1 answer
  • I need help with these two .
    8·1 answer
  • Which number line shows the inequality n&lt; - 1?
    10·1 answer
  • PLEASE HELP THID QUIZ DEPENDS ON MY GRADE<br> Match the function with the correct equation.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!