All categories

3 years ago

Find the Surface Area of a cylinder with a base radius of 2 cm and a height of 3 cm. Use pi = 3.14

Mathematics

2 answers:

Roman55 [17]3 years ago

7 0

$S=2\pi r(r+h)\\
S=2\cdot3.14\cdot2\cdot(2+3)\\
S=12.56\cdot5\\
S=62.8\ cm^2$

Oksi-84 [34.3K]3 years ago

5 0

$A_S=2\pi r^2+2\pi rH\\\\r=2cm;\ H=3cm\\\\A_S=2\pi\cdot2^2+2\pi\cdot2\cdot3=2\pi\cdot4+2\pi\cdot6=8\pi+12\pi=20\pi\ (cm^2)\\\\20\pi\approx20\cdot3.14=62.8\ (cm^2)$

You might be interested in

The value of b when solving the equation 2 (6 + 12) = 16 is:

elena-s [515]

Answer:

Step-by-step explanation:

2(6+12)=16

2 X 6 + 2 X 12

12 + 24

26 = 16

HOPE U GE5T IT

8 0

3 years ago

49a = 245.....................................................

scoray [572]

You would divide 245 by 49 to get a
a= 5

7 0

3 years ago

Read 2 more answers

HELP PLEASE I'LL GIVE 30 POINTS!!!

jasenka [17]

Answer:

x = 45

Step-by-step explanation:

Straight line has 180 degrees; so if you add all the angles up:

2x + x + x = 180

4x = 180

x = 45 degrees

6 0

3 years ago

Read 2 more answers

Find the area of the rhombus. 4.32 m2 2.16 m2 1.08 m2 1.05 m2

S_A_V [24]

Answer:

Step-by-step explanation:

Alright, lets get started.

The part of the diagonals are given as 0.9 m and 1.2 m.

The diagonals of rhombus intersect each other.

Hence the length of diagonals will be : $0.9*2=1.8$ and $1.2*2=2.4$

The formula of area of rhombus is : $\frac{pq}{2}$ where p and q are the length of diagonals.

So plugging the values of diagonals in formula, the area will be :

Area = $\frac{1.8*2.4}{2}$

Area = $\frac{4.32}{2}$

Area = $2.16 \ m^2$ ................. Answer

Hope it will help :)

6 0

3 years ago

Help please :)) 10 points

DaniilM [7]

Answer:

54 -3n²

Step-by-step explanation:

The square of a number (n) is represented by n². Three times that value is represented by 3n².

The relation "a is subtracted from b" is represented as ...

b - a

When 3n² is subtracted from 54, the appropriate representation is ...

54 -3n²

6 0

3 years ago