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
Talja [164]
3 years ago
6

Help!!!!! please!!!!!

Mathematics
1 answer:
defon3 years ago
6 0

Answer:

The answer is option b.

<h2>144π</h2>

Step-by-step explanation:

Surface area of a sphere is 4πr²

where r is the radius

diameter = radius / 2

<h3><u>For Big </u><u>sph</u><u>ere</u></h3>

radius = 15 / 2 = 7.5in

Surface area = 4π(7.5)²

= 225π

<h3><u>Small </u><u>sph</u><u>ere</u></h3>

radius = 9/2 = 4.5in

Surface area = 4π(4.5)²

= 81π

Difference of the surface areas is

Surface area of big sphere - surface area of small sphere

Which is

225π - 81π

<h3>= 144π</h3>

Hope this helps you.

You might be interested in
Determine if the triangle is similar. If similar, state how and complete the similarity statement.
Yuri [45]

Answer:

It would be...

Step-by-step explanation:

Similar By: 22.5 and 27

ABCD: G AND H AND F

I am not sure but I try hard

8 0
3 years ago
What is 0.7 subtract 3 ​
Irina18 [472]

Answer:

-2.3

Step-by-step explanation:

5 0
2 years ago
A cube-shaped box has a volume of 125 cubic inches. If the box is packed full of cubes with edge lengths of 1 inch, how many cub
harina [27]

I am not sure if I am right, but this is the best I can answer.


Useing reason, and logic, my guess would be if you take 125, and divided it by 4, you would get 31.25. that should be the answer... if i am wrong, i am truely sorry. I havent been in the subject in a while...


                                                           Hope this helps.


6 0
3 years ago
Three times the largest of three consecutive even integers is 76 more than the sum of the other two integers what are the intege
DerKrebs [107]
<span>go tot he website of 
</span>
https://www.algebra.com/algebra/homework/Problems-with-consecutive-odd-even-integers/Problems-with-c...

It will help you understand the problem and give you the answer.
7 0
3 years ago
What’s The coefficient in the expression 7x+ 14
nydimaria [60]

Answer:

7 is the coefficient.

3 0
2 years ago
Other questions:
  • I don’t know how to answer this
    15·1 answer
  • What is the scale factor of 5ft=15yd?
    9·1 answer
  • Send help please I am confused aaa According to the distributive law, what operation goes in the blank? -(8 - 7) = - 8 __ 7
    14·1 answer
  • Today, 5 friends went out for lunch. Their total bill was ,$36.70 including tax and gratuity. They decided to split the bill equ
    12·1 answer
  • Use technology to construct an appropriate model of the data. (0,1), (1,-2), (2,-3), (3,-2), (4,1) f(x) = – x2 + 4 f(x) = x2 - 4
    14·1 answer
  • Amanda's first four test scores are 77, 95, 84, and 69. What does Amanda need to score on the next test to have at least an 82 a
    8·1 answer
  • Brittany read 100 pages in 97 minutes. How many pages can she read in 1 minute
    13·1 answer
  • Please help, thanks if you do
    12·2 answers
  • If the volume of a cube is 27 m^3, what is the surface area of the cube, in square meters
    14·1 answer
  • 60 is 15% of what number?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!