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
TEA [102]
3 years ago
14

The area of the surface of a sphere is described by the formula S=4(3.14)r^2. The earth has a radius of 3960 miles and dry land

forms 29.2% of the earth’s surface. What is the area of the dry land on earth?
Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0

Answer: 57,512,581.63miles^2

Step-by-step explanation:

Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

S=4(3.14)r^2\\S=4(3.14)(3,960miles)^2\\S=196,960,896miles^2

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by \frac{29.2}{100}=0.292

Threfore, the area of dry land is the following:

S_{land}=(0.292)(196,960,896miles^2)=57,512,581.63miles^2

You might be interested in
What's the difference between 6z and z6
Airida [17]
Simple..

there is a major difference between 6z and z^{6}

6z means: 6 times z

and

z^{6} means: z to the power of 6(z*z*z*z*z*z)

An example...

make z=2...plug n chug..

6z----> 6(2)=12
and
z^{6}--->2^{6}=64

As you can see..there is a major difference.

Thus, your answer.
4 0
3 years ago
Given sinθ=- 3/5 and cscθ=-5/3 in quadrant III, find the value of other trigonometric functions using a Pythagorean Identity. Sh
Yakvenalex [24]
Let ABC be a triangle in the 3rd quadrant, right-angled at B. 
 So, AB-> Perpendicular BC -> Base AC -> Hypotenuse. 
Given: sinθ=-3/5 cosecθ=-5/3 
 According to Pythagorean theorem, square of the hypotenuse is equal to the sum of square of the other two sides.
 Therefore in triangle ABC, 〖AC〗^2=〖AB〗^2+〖BC〗^2 ------
--(1)
 Since sinθ=Perpendicular/Hypotenuse ,
 AC=5 and AB=3
 Substituting these values in equation (1)
 
〖BC〗^2=〖AC〗^2-〖AB〗^2

 ă€–BC〗^2=5^2-3^2
 

 ă€–BC〗^2=25-9

 ă€–BC〗^2=16

 BC=4 units

 Since the triangle is in the 3rd quadrant, all trigonometric ratios, except tan
and cot are negative.
 So,cosθ=Base/Hypotenuse Cosθ=-4/5 
 secθ=Hypotnuse/Base secθ=-5/4 
 tanθ=Perpendicular/Base tanθ=3/4  
 cotθ=Base/Perpendicular cotθ=4/3
4 0
3 years ago
I need help pleaseeeee
Ira Lisetskai [31]
2.1 ÷ 1.488 = 1.41
1.41 rounded to the nearest tenth is 1.4
so your answer is 1.4
7 0
3 years ago
Pzz look at this problem first person with correct answer will get branliest
galina1969 [7]

Answer:

h,  negative,  negative

Step-by-step explanation:

4 0
3 years ago
30 people watched the soccer game last night . Ticket cost $2.75 each. Half of these fans bought a program at $1.50. How much mo
butalik [34]
Half of the people bought tickets at $1.50, $1.50 times 15 equals $22.50

The other half bought them at the regular price of $2.75, $2.75 times 15 equals $41.25

When we combine the two money totals, we end up with a grand total of $63.75

8 0
3 years ago
Read 2 more answers
Other questions:
  • What do i do for this problem
    15·2 answers
  • You sell hot dogs and hamburgers for two days. Your first day you sell 200 hamburger and 150 hotdogs. You made a total of 1,450
    11·1 answer
  • Thirteen less than six times a number is equal to 11 more than four times the number
    6·1 answer
  • At the sewing store ashly bought a bag of mixed buttons she got 25 buttons in all 5 of the buttons were large what percentage of
    11·2 answers
  • Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation. If y
    7·1 answer
  • Suppose you purchase a bundle of 18 bare-root broccoli plants. The sales clerk tells you that on average you can expect 8% of th
    5·1 answer
  • Assume that adults have IQ scores that are normally distributed with a mean of 96.296.2 and a standard deviation 20.520.5. Find
    8·1 answer
  • Which expression is the best estimate of 1 1/4 • 3 2/3 ? A) 2 •4 B) 1 •4 C)2•3 D) 1•3
    9·2 answers
  • Please Help me! ASAP
    12·1 answer
  • 1.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!