What is the surface area of a sphere with a radius of 30 m?

Answers

Answer 1

Answer:

The surface area A of a sphere:

A=4πr^2

r - the radius

r=30 m

A=4π×30 ^2 =4π×900=3600π [m ^2 ]

Surface area = 3600π [m ^2 ]


Related Questions

Solve for X
[tex] \frac{3x - 2}{3x + 1} = 3[/tex]
help pls​

Answers

The answer is x = -5/6

And in decimal form it would be, -0.8333333

What is the volume of the prism?



Enter your answer, as a mixed number in simplest form, in the box.


cm³

The figure contains a right rectangular prism. The length of the prism is labeled 6 and one half centimeters, the width is labeled 2 and one half centimeters, and the height is labeled 2 and one half centimeters.

Answers

Answer:

40 [tex]\frac{5}{8}[/tex] [tex]cm^{3}[/tex]

Step-by-step explanation:

The figure is a rectangular prism, so the formula would be Volume = length x width x height.

length =  6 [tex]\frac{1}{2}[/tex] cm

width  =  2 [tex]\frac{1}{2}[/tex] cm

height  =  2 [tex]\frac{1}{2}[/tex] cm

If you plug everything you have in the problem into the volume equation, you would get : Volume = 6 [tex]\frac{1}{2}[/tex] cm x 2 [tex]\frac{1}{2}[/tex] cm x 2 [tex]\frac{1}{2}[/tex] cm.

Without a calculator, I would first turn the mixed numbers into improper fractions.

6 [tex]\frac{1}{2}[/tex]  = [tex]\frac{13}{2}[/tex]2 [tex]\frac{1}{2}[/tex] = [tex]\frac{5}{2}[/tex]

Volume = [tex]\frac{13}{2}[/tex] x  [tex]\frac{5}{2}[/tex] x  [tex]\frac{5}{2}[/tex]

When you multiply everything together you should get [tex]\frac{325}{8}[/tex].

As a mixed number, that would be 40 [tex]\frac{5}{8}[/tex] [tex]cm^{3}[/tex].

Quadrilateral DEFG is a rectangle, FH = 5x, and GH = x + 80. What is the value of x?

HELPPPP

Answers

FH=GH so 5x=x+80 which means x=16

jason has a bar of chocolate he gives his friend 2/5 of his chocolate bar.what percentage of his bar of chocolate does he have left

Answers

Answer:

60%

Step-by-step explanation:

he gave away 2/5 which is 40%. 100%-40% is 60%

Answer:

Step-by-step explanation:

Left over chocolate = 3/5

Percentage = [tex]\frac{3}{5}*100=3*20 =[/tex] 60%

pleaseeee Answer! Will Mark as Brainliest for the Best Answer

Answers

p^4 s^5 y^-7 z^-1
................................

Answer:

[tex]p^{4} s^{5} y^{-7} z^{-1}[/tex]

Step-by-step explanation:

[tex]\frac{1}{y^{7} } = y^{-7}[/tex]

[tex]\frac{1}{z} = z^{-1}[/tex]

help plss thank you -
Which statement correctly describes the number 0.81382?
A.
The number is rational because it is a terminating decimal.
B.
The number is rational because it is a repeating, non-terminating decimal.
C.
The number is irrational because it is a non-repeating, non-terminating decimal.
D.
The number is irrational because it is a repeating decimal.

Answers

A is correct! Have a good day!

0.81382 is a rational number because it is a terminating decimal.

What is rational number?

A rational number is a number that is expressed as the ratio of two integers, where the denominator should not be equal to zero, and also whose behavior is known.

What is irrational number?

An irrational number is a type of real number which cannot be represented as a simple fraction and also whose behavior is not known.

According to the given question.

We have a number 0.81382

The above number is not repeating but terminating.

Therefore, we can say that the above number is rational because it is a terminating decimal.

Hence, 0.81382 is a rational number because it is a terminating decimal.

Find out more information about rational and irrational number here:

https://brainly.com/question/17450097

#SPJ2

Help me ASAP!!!!!!!!

See picture attached

Answers

Answer:

47 very easy

Step-by-step explanation:

lalalalalalalalalaalalalallala

If a triangle has side lengths of 28,45, and 50, is the triangle acute,obtuse,or right?

Answers

Answer:

Acute i think

Step-by-step explanation:

Answer:

acute

Step-by-step explanation:

i got 23 but i am not sure it is correct or not.

Answers

Answer:

in triangle PON

relationship between perpendicular and hypotenuse is given by sin angle

sinx°=p/h=19/49=

x°=sin-¹(19/49)=22.81=23°

yeah you are right.

Parallel Lines cut by a transversal

Answers

Answer:

110

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Set the two given equations equal to each other (alternate angles i think)

12x + 2 = 11x + 11

**simplify and pull x to one side**

x = 9

**now insert x=9 into one equation (I choose 12x+2**

12(9) + 2 = 108 + 2 =110

A

solve the following
a brick measures
l= 15 cm
b= 8 cm
h= 5 cm
how many bricks will be used to make a wall of length=15 m, breath=10 m and height=8m

Answers

Answer:

2000000 bricks

Step-by-step explanation:

The computation of the number of bricks to be used is shown below:

The Volume of brick is

= (15 × 8 × 5)cm^3

= 600 cm^3

And, the Volume of wall is

= (1500 × 1000 × 800)cm^3

= 1200000000 cm^3

Now Bricks needed is

= 1200000000 cm^3 ÷ 600cm^3

= 2000000 bricks

Find the area of the figure. Round to the nearest tenth if necessary. 5.5 ft 6 ft 8 ft ​

Answers

Answer:

21 savage

Step-by-step explanation:

Ian rode in a taxi to get to an airport. The total cost of his taxi ride was more than $12. Write and solve an inequality to find the possible distances, in miles, Ian could have traveled in the taxi. Show or explain how you got your answer.

Answers

Missing Part:

The initial fee for a taxi ride is $2.60.  Each mile traveled in a taxi costs an additional $2.50.

Answer:

[tex]2.60 + 2.50x > 12[/tex]

[tex]x >3.76[/tex]

Step-by-step explanation:

Given

[tex]Initial = 2.60[/tex]

[tex]Rate = 2.50[/tex] per mile

Required

Miles traveled for more than $12

First, we represent the given parameters as an equation.

Represent miles with x and cost with y

So:

[tex]y = Initial + Rate * x[/tex]

[tex]y = 2.60 + 2.50 * x[/tex]

[tex]y = 2.60 + 2.50 x[/tex]

In Ian case, the distance traveled is more than $12.

This is represented as:

[tex]2.60 + 2.50x > y[/tex]

Substitute 12 for y

[tex]2.60 + 2.50x > 12[/tex]

Make 2.50x the subject

[tex]2.50x > 12 - 2.60[/tex]

[tex]2.50x > 9.40[/tex]

Make x the subject

[tex]x >9.40/2.50[/tex]

[tex]x >3.76[/tex]

Please give me the correct answer.Only answer if you're very good at math.

What is the relationship between toppings and price?

A:Fornos charges one euro for every topping.

B:Fornos charges one euro for a plain slice, and one-half euro for each extra topping.

C:Fornos charges one and a half euros for each topping.

D:Fornos charges one-half for each topping. ​

Answers

Answer:

D

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

triangle similarity i think ... picture included * SIN COS TAN

Answers

Answer:

d = 105tan(37°)

Step-by-step explanation:

opposite (o) = d

adjacent (a) = 105

Angle A = 90 - 53 = 37°

Therefore,

the correct equation would be

tan(A°) = opposite/adjacent

tan(37°) = d/105

d = 105tan(37°) ✅

d = 105 × 0.7535540501

d ≈ 79.12 units

______________

#IndonesianPride

- kexcvi

factorise (2t-7)²-(5t-4)²
with working pls​

Answers

Answer:

33+12t−21t^2

Step-by-step explanation:

(2t-7)²-(5t-4)²

Use binomial theorem (a−b)^2 = a^2−2ab+b^2 to expand (2t-7)².

4t^2−28t+49−(5t-4)²

Use binomial theorem (a−b)^2 = a^2−2ab+b^2 to expand (5t-4)².

4t^2−28t+49−(25t^2−40t+16)

To find the opposite of 25t^2

−40t+16, find the opposite of each term.

4t^2−28t+49−25t^2−40t+16

Combine 4t^2  and −25t^2  to get −21t^2.

−21t^2−28t+49+40t−16

Combine −28t and 40t to get 12t.

−21t^2+12t+49−16

Subtract 16 from 49 to get 33.

−21t^2+12t+33

Swap terms to the left side.

33+12t−21t^2

I hope this helped!

Solve: 2(x - 3) = 10

Answers

Answer:

x = 8

Step-by-step explanation:

2(x - 3) = 10

or. 2x - 6 = 10

or. 2x = 10 + 6 = 16

or. x = 16/2 = 8

2(x-3)=10
2x-6=10
2x=16
x=8

HELP PLS! Worth 20 points!!
What is the hypotenuse and the shorter leg of a 30-60-90 triangle, if the longer leg is 12?

Answers

Let the hypotenuse be y and the shorter leg be x
sin30°= SHORTER LEG/HYPOTENUSE
1/2=x/y
2x=y..........(1)

cos30°=LONGER LEG/HYPOTENUSE
Root3/2=12/y
y=8 Root 3 units

Substituting y in equation 1:
2x=8 Root 3
x= 4 Root 3 units

Thus, the value of the hypotenuse is 8 Root 3 units, and the value of the shorter leg is 4 Root 3 units.

What’s the answer to this question???????

Answers

Answer:

26

Step-by-step explanation:

if YZ bisects VW then VX = XW

if VX = 26 then XW = 26 also

Find the unit rate for each Lean Cuisine Entree. Show your
work
Please show work worth 40 points

Answers

Answer: 60

Step-by-step explanation:10 x 6 = 60 ( Also, 6x6x6x6x6x6x6x6x6x6 = 60

What is the equation of the line that passes through (3.-5) and is parallel to 5x - 3y = 15?​

Answers

Answer:

y = 5/3x - 10

Step-by-step explanation:

[tex]5x - 3y = 15\\-3y = -5x + 15\\y = 5/3x - 5[/tex]

that means the slope of the new line also has to be 5/3 because parallel lines have the same slope.

put it in point-slope form:

y - -5 = 5/3(x - 3)

y + 5 = 5/3x - 5

y = 5/3x - 10

What are appropriate ways of write "6 times x"?

Answers

Huh what do you mean??

Answer:

6x or 6(x)

Step-by-step explanation:

6 bracket (x) is a form of saying multiplication

please help quick im using a big attack

Answers

Answer:

3,25 6,85 7,105

Step-by-step explanation:

I hope this helps!

I really need help please. I’ll pay !

Answers

Step-by-step explanation:

Parabolic curve........

the length and width of the rectangle are in ratio 4:3.If the perimeter of the rectangle is 56 m find the length and width of the rectangle​

Answers

Answer:

length = 4x

width = 3x

perimeter = 56 m

also, perimeter = 2 (length + width)      [from formula]

therefore, 2(4x + 3x) = 56m

2(7x) = 56m

14x = 56m

x = 56/14 m

x = 4m

Answer:

Step-by-step explanation:

Length : width = 4 : 3

Length = 4x

Width = 3x

Perimeter of rectangle = 56 m

2*(length +width ) = 56

2*(4x + 3x) = 56

2*(7x)         = 56

           14x = 56

Divide both sides by 14

               x = 56/14

              x  = 4

Length = 4x = 4*4 = 16 m

Width = 3x = 4*3 = 12 m

Can someone please help

Answers

C because 45.1%=45% so 45% is closest to -3 to 0 degress

Why did you delete my answer?

What is the degree of this polynomial? x ^ 3 + xy + x * y ^ 2 + 5y + 3

Answers

Answer:

The degree of the given polynomial is 3.

Hope it will help :)

Can anyone help with this please

Answers

Answer:

B

Step-by-step explanation:

B is correct. Only positive equation with y int at 2

Answer:

b

Step-by-step explanation:

What is the graph for y=2x+2?

There are 2 ways to do this problem. The easier method is to set x as two random numbers, and find y for both of the situations. Then, you will find that, for example,

When x = 0, y = 2 and when x = -1, y = 0. The only graph that has these two points is b, so that is the answer.

However, there is a more reliable way to do this.

First, let's go over what slope is. Slope is the "m" in y=mx+b and can be found by doing "rise over run". In other words, it represents how steep the line is/how fast it rises. If there is a negative slope, the graph moves down, like in c or d. If there is a positive slope, the line moves up, like in a or b.

We need to find a graph that has a slope of two (for every x, y rises by 2 [like if x=1, y=2, or when x=2, y=4, etc.). This only leaves option b as an answer.

Please help, I would greatly appreciate it :)

Answers

All answers are correct
all of the above would be correct!

Help me with this!!!!!!

Answers

Answer:

IJ = 82

Step-by-step explanation:

IJ≅IH so they are the same length

IH = 82 = IJ

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