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
Sav [38]
3 years ago
14

GEOMETRY HELP!! FIND THE VOLUME IN TERMS IF PI !!! EXPLAIN PLEASE!!

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0

\bf \textit{surface area of a sphere}\\\\
SA=4\pi r^2~~
\begin{cases}
r=radius\\[-0.5em]
\hrulefill\\
SA=400\pi \end{cases}\implies 400\pi =4\pi r^2\implies \cfrac{400\pi }{4\pi }=r^2
\\\\\\
100=r^2\implies \sqrt{100}=r\implies \boxed{10=r}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\textit{volume of a sphere}\\\\
V=\cfrac{4\pi r^3}{3}~\hspace{7em}V=\cfrac{4\pi \boxed{10}^3}{3}\implies V=\cfrac{4000\pi }{3}

You might be interested in
A bookstore sells textbooks for $80 each and notebooks for $4 dollars each. The bookstore would like to sell $800 in merchandise
mariarad [96]

Answer: 8 textbooks

Step-by-step explanation:

Sold 40 notebooks = 40 x $4 = $160

$800 - $160 = $640 left to sell

$640/$80 (cost of textbook) = 8 textbooks need to be sold

3 0
3 years ago
Find the probability of spinning red on every spin​
KIM [24]
Y’all need to stop doing links!

y’all can get banned.... so yeah okay 623
8 0
2 years ago
How to answer because I struggle to answer
SpyIntel [72]

5: AA  47=47    36=36  similar

6: SSS   32/16 =2,  24/12 =2,  9/4.5 = 2  similar    

7: SAS  72/53= 1.3,  55=55, 48/12 = 4  not similar

8: SAS  45/15= 3,  54=54,  9/3=3  Similar

9.SAS  20/10 =2,  10/8 = 1.25  not similar

10.SAS  32/14= 2.29, 46=46,  12/7= 1.79  not similar


5 0
3 years ago
Graph the given inequality. y ≤ 4 – | x |
Brilliant_brown [7]

Answer:

The graph is included in the attached pictures

Step-by-step explanation:

The graph for y=4-|x| is shown in the attached picture, the inequality tell us that the region is located below that particular graph including the function, hence you have the second attached picture

6 0
3 years ago
Help I have to turn this in. In a couple hours
Gelneren [198K]

28. Surface Area

This is some sort of house-like model so for every face we see there's a congruent one that's hidden.  We'll just double the area we can see.

Area = 2 × ( [14×9 rectangle] + 2[15×9 rectangle]+[triangle base 14, height 6] )

Let's separate the area into the area of the front and the sides; the front will help us for problem 29.

Front =  [14×9 rectangle] + [triangle base 14, height 6]

          = 14×9 + (1/2)(14)(6) = 14(9 + 3) = 14×12 = 168 sq ft

OneSide =  2[15×9 rectangle] = 30×9 = 270 sq ft

Surface Area = 2(168 + 270) = 876 sq ft

Answer: D) 876 sq ft

29.  Volume of an extruded shape is area of the base, here the front, times the height, here 15 feet.  

Volume = 168 * 15 = 2520 cubic ft

Answer: D) 2520 cubic ft

6 0
3 years ago
Other questions:
  • the floor plan is 22' in length, and 12' in width. What is the ratio of the length of the room to it's area? where Area = Length
    13·1 answer
  • Evaluate 1−4×(−3)+8×(−3)
    6·2 answers
  • Can someone answer 8-10
    13·1 answer
  • What are the coordinates of r
    14·2 answers
  • Write a list of 6 ordered pairs to show the height of the candle in inches (y) as a function of time in hours (x) from the first
    5·1 answer
  • What is 3 1/4 - 2 1/2
    8·1 answer
  • Write an equation of a line that passes through (-2,5)and (-3,9)
    6·1 answer
  • (-4/3)x -6 =26<br><br> solve for x
    9·2 answers
  • The coordinates of three vertices of square ABCD are A(−212,112),B(−212,−3), and C(2,112).
    6·1 answer
  • Please help me I can’t do it and don’t add links Three sides of a quadrilateral are the same length q.the length of the fourth s
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!