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
What is -2/3 divided by 6/8
Ierofanga [76]

Answer:

-8/9 yw

Step-by-step explanation:

just divide the numbers by each other:D

8 0
2 years ago
Read 2 more answers
PLEASE HELP FOR 87 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!
Anton [14]
1. You can expand the coefficients to yield 6, and add the powers since the bases are the same (ie A)

2. y⁻² can also be rewritten as 1/y², so it becomes 1/y² · 1/y⁵ = 1/y⁷ (ie C)

3. Only the x is affected by the power.

4. y = 3·5ˣ doesn't change in slope, so it essentially is similar to a 5ˣ graph.

5. Should be pretty straight forward.
6. Should be pretty straight forward.
7. Should be pretty straight forward.

8. Since x is the length of the border, calculate the area of the frame and subtract that from the area of the square painting. (Remember that the length of the square painting is x - 8, not x - 4)

9. Should be pretty straight forward.
11 - 25 are pretty much similar to each other.
If you have trouble, let me know and I'll walk you through it.
6 0
3 years ago
Read 2 more answers
Please solve these questions I am hella desperate rn
Reptile [31]

Answer:

Please solve these questions I am hella desperate rn

Step-by-step explanation:

5 0
2 years ago
The square root of x^16y^2
ASHA 777 [7]

\bf \sqrt{x^{16}y^2}\implies \sqrt[2]{x^{8\cdot 2}y^2}\implies \sqrt[2]{(x^8)^2y^2}\implies x^8y

3 0
3 years ago
Pls help me with this
Illusion [34]

Answer:

No solutions.

Step-by-step explanation:

Both equations have the same slope, but are separated by virtue of their different values of b, the y-intercept.  The same slope means they are parallel lines.  Since the y-intercept is different, they do not overlap.

As they say, "Parallel line have a lot in common.  Too bad they'll never meet."

See attachment.

7 0
2 years ago
Other questions:
  • Evaluate -4 +(-3) - (-2)
    15·2 answers
  • Amy can ride her bike 4 miles in 30 minutes. Sebastian can ride his bike 3 miles in 24 minutes. How long, in miles, does it take
    12·2 answers
  • Which equation is in slope-intercept forms and represents a line slope 1/4 through the point 0,0
    9·1 answer
  • Write an equation of the parabola in vertex form.
    11·1 answer
  • Can 2yards and 60 inches be expressed as a ratio if so express the ratio in simplest form
    6·1 answer
  • What is the value of x to the nearest tenth?<br> A)7.2<br> B)9.2<br> C)4.8<br> D)12.0
    5·1 answer
  • If 3t - 7 = 5t, then 6t =??<br> please help! will award brainliest to the best answer
    12·1 answer
  • If you have four quarters and three nickles how much money do you have
    15·2 answers
  • Please help me with this as soon as possible!
    11·2 answers
  • Joshua has a ladder that is 12 ft long. He wants to lean the ladder against a vertical wall so that the top of the ladder is 11.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!