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
Gnoma [55]
3 years ago
11

Help me with this question, please!

Mathematics
1 answer:
AURORKA [14]3 years ago
8 0

Answer:

3,432 m²

Step-by-step explanation:

The amount of aluminum in square meters needed to make the mailboxes = 1863(surface area of each mailbox)

Surface area of each mail box = ½(surface area of cylinder) + (Surface area of rectangular prism/box - area of the surface of the box that joins the half-cylinder)

✔️Surface area of ½-cylinder = ½[2πr(h + r)]

r = ½(0.4) = 0.2 m

h = 0.6 m

π = 3.14

Surface area of ½-cylinder = ½[2*3.14*0.2(0.6 + 0.2]

= 0.628(0.8)

Surface area of ½-cylinder = 0.5024 m²

✔️Surface area of the rectangular box/prism = 2(LW + LH + WH)

L = 0.6 m

W = 0.4 m

H = 0.55 m

Surface area = 2(0.6*0.4 + 0.6*0.55 + 0.4*0.55)

Surface area of rectangular box = 1.58 m²

✔️Area of the surface joining the half cylinder and the box = L*W = 0.6*0.4 = 0.24 m²

✅Surface area of 1 mailbox = (0.5024) + (1.58 - 0.24)

= 0.5024 + 1.34

= 1.8424

Amount of aluminum needed to make 1863 mailboxes = 1863 × 1.8424 = 3,432.3912

= 3,432 m²

You might be interested in
Find P on AB that is 2/3 of the distance from A(-3,-5) to B(9,4).
Ludmilka [50]

A line segment can be divided into ratios.

<em>The coordinate of P on line segment AB is (5,1)</em>

Given

A = (-3,-5)

B = (9,4)

The position of P from A to B is:

P_A = \frac 23

So, from P to B would be:

P_B =1 -  \frac 23

P_B = \frac 13

So, the ratio is:

m : n = \frac 23 : \frac 13

Simplify

m : n = 2 :1

<u>The coordinate of point P is:</u>

P = (\frac{mx_2 + nx_1}{m + n},\frac{my_2 + ny_1}{m + n})

So, we have:

P = (\frac{2 \times 9 + 1 \times -3}{2 + 1},\frac{2 \times 4 + 1 \times -5}{2 + 1})

P = (\frac{15}{3},\frac{3}{3})

P = (5,1)

<em>Hence, the coordinate of P is (5,1)</em>

Read more about line ratios at:

brainly.com/question/8847082

8 0
3 years ago
Jackrabbits are capable of reaching speeds up to 40 miles per hour. How fast is this in feet per second? (Round to the nearest w
pishuonlain [190]

Answer:

59 feet per second

Step-by-step explanation:

  • (40m)(5280ft)=211,200 ft/hr
  • (211,200 ft/hr )=(211,200ft/3600s)
  • 58.7 ft/s
6 0
2 years ago
Read 2 more answers
The equation y-1=-7(x-3) is written in point-slope form. What is the y-intercept of the line?
vredina [299]

Hello,


y - 1 = -7x + 21

So y = 1

x = 21/7

8 0
3 years ago
Someone plz help to become brainliest and get points !! :) plz answer truthfully
Ilia_Sergeevich [38]

Total number of cubic inches of cheese sauce in container = Volume of cylinder = \pi .8^2.7

Option A is correct.

Step-by-step explanation:

The diameter of cylinder = 16 inches

The height of cylinder = 7 inches

Total number of cubic inches of cheese sauce in container = Volume of cylinder = ?

The formula used to find Volume of cylinder is:

Volume=\pi r^2h

We are given diameter of cylinder while we need radius according to formula.

So, radius = diameter/2

radius = 16/2

radius = 8

Putting values and finding volume:

Volume=\pi .8^2.7

So, Total number of cubic inches of cheese sauce in container = Volume of cylinder = \pi .8^2.7

Option A is correct.

Keywords: Volume of cylinder

Learn more about Volume of cylinder at:

  • brainly.com/question/12497249
  • brainly.com/question/6443737

#learnwithBrainly

8 0
3 years ago
When analyzing a scatterplot with a cluster, why should outliers generally be excluded when interpreting the relationship of the
djyliett [7]

Answer:

Outliers are often extreme values that are not as representative of the data set as the other points in the cluster. If the outliers are included, a description of the data set might be misrepresented.

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • What is the difference 6 - 3 2/5 =
    9·1 answer
  • What happens to the coordinates of a shape when the shape reflects about the line y=x?
    13·2 answers
  • If a=mg-kv2/m,find,correct to the nearest whole number the value of v when a=2.8,m=12,g=9.8 and k=8/3
    13·1 answer
  • Find a1 for the arithmetic series with s20 = 80 And d = 2
    12·2 answers
  • I think it is a check my answer?
    7·2 answers
  • I played 4 video games and had an average score of 10,000 points per game.
    9·1 answer
  • SOMEONE KNOW THIS, IS STUDY ISLAND
    9·1 answer
  • Alicia is solving the equation shown.
    13·1 answer
  • PLEASE HELP I'M BAD AT MATH I'LL MAKE BRAINLEIST!!!!!!!​
    11·1 answer
  • El triple del cuadrado de un número
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!