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
djverab [1.8K]
3 years ago
9

Please answer and explanation

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
3 0

61.23 square inches of metal is needed to create a cylindrical can.

Solution:

Diameter of the base = 3 in

Radius of the base = 3 ÷ 2 = 1.5 in

Height of the cylinder = 5 in

The value of π = 3.14

<u>To find the surface area of the cylinder:</u>

Surface area of the cylinder = 2 \pi r^{2}+2 \pi r h

                                               = 2 × 3.14 × (1.5)² + 2 × 3.14 × 1.5 × 5

                                               = 14.13 + 47.1

Surface area of the cylinder = 61.23 sq. in

Hence 61.23 square inches of metal is needed to create a cylindrical can.

You might be interested in
An engineer performs a flow test of a cooling water system. The test equipment hooks into flow elements in the system. There are
KiRa [710]
Each flow element requires a test gauge ---> 32*80 = $2560

Each flow element needs total of 6 feet of tubing  ----> 32*6 = 192 ft
price per foot = 6/100 = $.06
-----> 192*.06 = $11.52

Each 3-ft length of tubing requires 2 connectors. ----> (192/3)*2 = 128
-----> 128*2.5 = $320

Total Cost = 2560 + 11.52 + 320 = $2891.52

Subtract from budget:
3000 - 2891.52 = $108.48
8 0
3 years ago
HURRY FIRST GETS BRAINLLEST The diagram below shows a circular pizza with a diameter of 14 inches. The pizza is in a square box
boyakko [2]

Answer:

pls do mark my answer as the brainliest..........

Step-by-step explanation

portion of square empty =  256 - 153.86 = 102.14cm^2

8 0
2 years ago
Anya found the slope of the line that passes through the points (–7, 4) and (2, –3). Her work is shown below. Let (x2, y2) be (–
Zielflug [23.3K]
C.<span>She used an incorrect formula. The formula should be the change in </span>y<span>-values with respect to the change in the </span>x<span>-values.

</span>
8 0
3 years ago
Read 2 more answers
Two piecewise functions are shown below. What is the value of
gizmo_the_mogwai [7]

Step-by-step explanation:

I am not sure what your problem here is.

you understand the inequality signs ?

anyway, to get

6×f(-2) + 3×g(1)

we can calculate every part of the expression separately, and then combine all the results into one final result.

f(-2)

we look at the definition.

into what category is -2 falling ? the one with x<-2, or the one with x>=-2 ?

is -2 < -2 ? no.

is -2 >= -2 ? yes, because -2 = -2. therefore, it is also >= -2.

so, we have to use

1/3 x³

for x = -2 that is

1/3 × (-2)³ = 1/3 × -8 = -8/3

g(1)

again, we look at the definition.

into what category is 1 falling ? the one with x > 2 ? or the one with x <= 1 ?

is 1 > 2 ? no.

is 1 <= 1 ? yes, because 1=1. therefore it is also <= 1.

so we have to use

2×|x - 1| + 3

for x = 1 we get

2×0 + 3 = 3

6×f(-2) = 6 × -8/3 = 2× -8 = -16

3×g(1) = 3× 3 = 9

and so in total we get

6×f(-2) + 3×g(1) = -16 + 9 = -7

3 0
2 years ago
A rectangular image of length 5 cm and width 7 cm is magnified in a studio. On magnification, 1 cm of the image represents 15cm.
Andre45 [30]

Answer:

238 cm

Step-by-step explanation:

so we have a scale factor   of  17: 1

originally we had the dimensions:   3cm by 4m

now we have    3*17  by 4*17  = 51 cm by 68 cm

Perimeter = 2*51 + 2*68 = 238 cm

8 0
1 year ago
Read 2 more answers
Other questions:
  • Rezolvați + explicație plzzzz
    6·1 answer
  • Which of the following is a composite number?
    10·1 answer
  • Please help me. Thnx
    11·1 answer
  • In a study of pain relievers , 100 people were given product A , and all but 33 experienced relief . In the same study , 50 peop
    13·1 answer
  • The bowl is shaped like a hemisphere with a radius of 5 inches. Find the volume of the bowl.
    10·1 answer
  • Consider the diagram.
    13·2 answers
  • The area of a rectangular pool is given by the trinomial 4y
    6·1 answer
  • If he is correct, what is the probability that the mean of a sample of 68 computers would differ from the population mean by les
    11·1 answer
  • Find mZUVT<br> mZWVU = 1699<br> mZWT = (2x + 20)°<br> mZUVT = (3x + 1919
    11·1 answer
  • Mr. Hartill lives in Indianapolis, Indiana. Last year, his adjusted gross income was $84, 869. How much did Mr. Hartill owe in s
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!