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
alekssr [168]
2 years ago
8

A closed cylindrical tank of radius 3.5 m and height 2m is made from

Physics
2 answers:
I am Lyosha [343]2 years ago
7 0

Explanation:

Answer:

Given :-

A closed cylindrical tank of radius 3.5 m and height 2 m is made from a sheet of metal.

To Find :-

How much sheet of metal is required.

Formula Used :-

{\red{\boxed{\large{\bold{T.S.A\: of\: cylinder\: =\: 2{\pi}r(r + h)}}}}}

where,

r = Radius

h = Height

Solution :-

Given :

Radius = 3.5 m

Height = 2 m

According to the question by using the formula we get,

⇒ \sf T.S.A =\: 2 \times \dfrac{22}{7} \times 3.5(3.5 + 2)

⇒ \sf T.S.A =\: 2 \times \dfrac{22}{7} \times 3.5(5.5)

⇒ \sf T.S.A =\: 2 \times \dfrac{22}{7} \times 3.5 \times 5.5T.S.A=2×722×3.5×5.5⇒ \sf T.S.A =\: 2 \times \dfrac{22}{7} \times 19.25

⇒ \sf T.S.A =\: 2 \times 60.5

➠ \sf\bold{\purple{T.S.A =\: 121\: {m}^{2}}}

∴ 121 m² of sheet of metal is required.

Dahasolnce [82]2 years ago
3 0

Explanation:

Total surface area of cylinder:

2\pi \times r(h + r) \\ 2 \times \pi \times 3.5(3.5 + 2) \\ 2\pi \times 19.25 = 120.951317 \\ 120.95  \: {cm}^{2}

sheet of metal required = 120.95 cm^2

You might be interested in
The length of the minute hand of the clock is 14cm. Calculate the speed with which the tip of the minute hand moves
Molodets [167]

Speed of the tip of the minute hand=V=0.0244 cm/s

Explanation:

The angular velocity of the minute hand is given by

\omega= \frac{2\pi}{T}

T= time period of the minute hand=60 min=3600 s

so ω= 2 π/3600 rad/s

Now linear velocity v= r ω

r= radius of minute hand=14 cm

so v= 14 (2 π/3600)

V=0.0244 cm/s

8 0
3 years ago
PLEASE Please HELP ME...
cupoosta [38]

Answer:

girl this easy ask yo teacher for help lol

7 0
2 years ago
One difference between a hypothesis and a theory is that a hypothesis
artcher [175]
A hypothesis is a tentative statement which is made to try to explain a known phenomenon but whose truth value is still uncertain, whether it is true or no depends on further research. On the other hand, a theory is made up of hypothesis which have been proven to be true so far, a theory should be able to explain future phenomena successfully
3 0
3 years ago
A 5kg bag falls a verticle height of 10m before hitting the ground.
g100num [7]

Answer:

u = 7m {s}^{ - 1}

Explanation:

We know that when we don't have air friction on a free fall the mechanical energy (I will symbololize it with ME) is equal everywhere. So we have:

me(1) = me(2)

where me(1) is mechanical energy while on h=10m

and me(2) is mechanical energy while on the ground

Ek(1) + DynamicE(1) = Ek(2) + DynamicE(2)

Ek(1) is equal to zero since an object that has reached its max height has a speed equal to zero.

DynamicE(2) is equal to zero since it's touching the ground

Using that info we have

m \times g \times h   =   \frac{1}{2}  \times m \times u {}^{2} \\

we divide both sides of the equation with mass to make the math easier.

9.8 \times 10 =  \frac{1}{2}  \times u {}^{2}  \\  \frac{98}{2}  = u {}^{2}  \\ u { }^{2} = 49 \\ u = 7

7 0
3 years ago
Which of the following is not a characteristic of S waves?
9966 [12]
Number a is a correct one
7 0
3 years ago
Other questions:
  • When the time of day for a certain ship at sea is 12 noon, the time of day at the prime meridian (0 longitude0 is 5 pm. what is
    9·1 answer
  • An old clock has a spring that must be wound to make the clock hands move. Which statement describes the energy of the spring an
    15·2 answers
  • A(n) 930 N crate is being pushed across a level floor by a force of 400 N at an angle of 20◦ above the horizontal. The coefficie
    6·1 answer
  • How does the steepness of the line on a speed graph relate to the objects speed
    7·1 answer
  • A 50.0 g toy car is released from rest on a frictionless track with a vertical loop of radius R (loop-the-loop). The initial hei
    5·1 answer
  • There is a current of 0.99 a through a light bulb when its connected to a 9.7 v battery what is the resistance of the light bulb
    9·1 answer
  • Drawing is a form of<br>​
    8·1 answer
  • Which lighting source has lower energy costs and a longer life but can be dangerous?
    14·1 answer
  • Cuando el pistón tiene un volumen de 2x10^-4 m^3, el gas en el pistón está a una presión de 150 kPa. El área del pistón es 0.001
    5·1 answer
  • How fast, in meters per second, does an observer need to approach a stationary sound source in order to observe a 1.6 % increase
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!