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
Arturiano [62]
3 years ago
13

A cylinder tube with caps on both ends is used to safely carry a rolled up poster. The tube is 42 inches tall with a radius of 1

.5 inches. If one mini can of spray paint covers 150 square inches, how many mini spray cans of red paint would be needed to cover the entire tube?
A. 3
B. 2
C. 1
D. 4

If anyone know this kind of math, I really need help with it. Im not very good in math and I have testing coming soon. Thanks!
Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
6 0
Find surface area
SA=2pir^2+2hpir

h=42
r=1.5

SA=2pi1.5^2+2(42)pi1.5
SA=4.5pi+126pi
SA=130.5pi square inches


area/areacoverdperspray≤numberofsprays
130.5pi/150
2.73
so buy 3 cans because you can't get 0.73 cans

A
You might be interested in
Sid is packing crushed ice into a cone-shaped cThe cone has a height of 5 in. Its base has a diameter of 4 in. What is thevolume
bagirrra123 [75]
The\ volume\ of\ the\ cone:V=\dfrac{1}{3}\pi r^2H\\\\H=5\ in\\2r=4\ in\to r=2\ in\\\\subtitute\\\\V=\dfrac{1}{3}\pi\cdot2^2\cdot5=\dfrac{1}{3}\pi\cdot4\cdot5=\dfrac{20}{3}\pi\ (in^3)\\\\Answer:\boxed{V=\dfrac{20}{3}\pi\ in^3}
7 0
3 years ago
Read 2 more answers
Write the equation in point-slope form of the line that passes through the given points.
Lera25 [3.4K]

Answer:

y-6=-1/3(x+6)

Step-by-step explanation:

y-y1=m(x-x1)

m=(y2-y1)/(x2-x1)

m=(3-6)/(3-(-6))

m=-3/(3+6)

m=-3/9

simplify

m=-1/3

y-6=-1/3(x-(-6))

y-6=-1/3(x+6)

4 0
3 years ago
Cara salary was increased from £28 250 to £29 832 work out the percentage increase in car salary​
Luden [163]
5.6 percent homie I gotchu

U do a Proportion

29832/28250=x/100

Then u just solve for x :D
7 0
3 years ago
17/33*11/20 which is the best estimate
a_sh-v [17]
The best estimate is 17/60 .
6 0
3 years ago
Read 2 more answers
Write the phrase "the product of 19 and a number" as a mathematical expression.
Sedbober [7]

Answer:

Phrase : "the product of 19 and a number"

Mathematical expression : 19A

Step-by-step explanation:

Phrase : "the product of 19 and a number"  

The product of two numbers a and b can be written as a x b =ab

<u>To find Mathematical expression </u>

Let A be a number,  

The product of number with 19 can be written as

19 x A  = 19A

Therefore the given phrase "the product of 19 and a number" as a mathematical expression =19A

7 0
3 years ago
Other questions:
  • What is the square root of ±16/14400?
    14·1 answer
  • an aquarium holds 6 1/4 gallons of water the water level dropped to 4/5 of this amount how much water should be added to fill th
    10·1 answer
  • Find the area for the image below A (0,6) B (5, -4) C(5,2 ) D (9,2) E (9,6)
    8·1 answer
  • I need help on this lol​
    10·2 answers
  • What are the coordinates of the midpoint of the segment whose endpoints are A(−1, −2) and B(6, 12) ?
    5·1 answer
  • How can graphing be applied to solving systems of non linear ? How is the final solutions appear on the graph?
    6·1 answer
  • A bowl contains 4 yellow marbles and 3 red marbles. Michael randomly draws 4 marbles from the bowl. He replaces each marble afte
    9·1 answer
  • Please answer !!!!!!
    8·1 answer
  • a cell phone company offers two different plans. In one plan there is a monthly fee of 40$ and charges .25 per minute. On the ot
    6·1 answer
  • Which pair of numbers are not opposites?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!