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
coldgirl [10]
3 years ago
13

19. A spherical balloon has a circumference of 19cm. what is the approximate surface area of the balloon to the nearest square c

entimeter?
A) 114 cm^2
B) 460 cm^2
C) 361 cm^2
D) 1,134 cm^2
Mathematics
1 answer:
Tamiku [17]3 years ago
5 0
The main formula of a spherical surface area is SA= 4 x Pi x r²
the circumference is C= 19cm =2 Pi r, so r = C/ 2Pi = 19 / 6.28 =3.02cm
so the surface area can be found by computing
SA= 4x 3.14x 3.02² =114.5, the nearest square centimeter is <span>A) 114 cm^2</span>
You might be interested in
Please help<br><br> Write an inequality for the given graph
Oduvanchick [21]

Answer:

 y < 1/2x - 3

Step-by-step explanation:

You can write the inequality equation for the graph using the form y = mx + b. The inequality line has a y-intercept at (0,-3). This means b = -3. It also has a slope of 1/2 since the line moves up 1 and over 2 to the next point on the line.

This means the lines equation is y = 1/2x - 3. But since this is an inequality, you must use an inequality sign. Since the line is dashed it is not equal to. Your options are < and >.  Use the point (0,0) to test which sign is appropriate.

y < 1/2x - 3                      y > 1/2x - 3

0 < 1/2(0) - 3                   0 > 1/2(0) - 3

0 < -3                              0 > -3

The answer is y < 1/2x - 3 since (0,0) doesn't make it true and (0,0) is not shaded in the graph. This means it is not a solution.

8 0
3 years ago
Please help!! I'm desprate
Orlov [11]

Answer:

Step-by-step explanation:

Going clockwise rotates the quadrilateral to the right.

5 0
3 years ago
Find the value of x.
777dan777 [17]
I dont get it look like you already did 
6 0
3 years ago
What is the slope of a line that is perpendicular to the line y= -1\2x+ 5
skelet666 [1.2K]

Answer:

-1/2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Picture with question
Volgvan
Sorry I don’t get that one
7 0
3 years ago
Other questions:
  • What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br> x =
    8·1 answer
  • A kid's pool is cylindrical and has a radius of 5 feet and a height of 2 feet. If a cubic foot holds about 7.48 gallons of water
    9·1 answer
  • Help me with these fractions with whole numbers
    12·1 answer
  • Will give brainliest if correct.
    5·2 answers
  • 6(x+8)=5x+4 <br><br> Please help me
    10·2 answers
  • Computer salespeople at a local store earn a $100 commission per computer for the first 5 computers they sell each month. For ev
    13·1 answer
  • The weekly allowances and expenses of two students are respectively established as 7:9 and 4:5. Determine the allowances if thie
    12·1 answer
  • What is 2x + 5y - 2x?​
    7·2 answers
  • HELP I NEED HELP ASAP
    11·2 answers
  • Convert 40 ounces into pounds. Round your answer to the nearest tenth.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!