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
allochka39001 [22]
3 years ago
10

What is the surface area of a sphere with a radius of 21 units

Mathematics
2 answers:
Marrrta [24]3 years ago
7 0

Hope this helps

Answer: 5541.77

natali 33 [55]3 years ago
3 0
  • formulae is 4πr²
  • 4×22/7×21²
  • 4×22×3×21
  • cause 7 divided the first 21 which gave it 3
  • answer=5544cm²
You might be interested in
Which graph shows the solution to the inequality <br> |x+3| ≥ 2?
KIM [24]

Answer:

2nd number line

Step-by-step explanation:

When there is an absolute value inequality of the form  |x+a| ≥ b,

We can say that the solution set (in a number line) would be:

  • we take the point x = -a
  • then we go b units in both directions (left and right)
  • start from those 2 points and draw arrows in both directions (left & right)

Keeping these points in mind,

|x+3| ≥ 2

we start from x = -3

we go 2 units left and right, so we arrive at x = -5 and x = -1

then we draw arrows to both sides

<em>looking at the choices, </em><em>we see 2nd answer choices (graph) portrays it correctly.</em>

4 0
3 years ago
A cell phone tower and a fence are on the same property. the fence is 8 feet tall and has a shadow that measures 14.5 feet. the
arlik [135]

Answer:

40 feets

Step-by-step explanation:

Given that:

Height of fence = 8 feets

Shadow of fence = 14.5 feets

Shadow of cell phone tower = 72.5 feets

Height of cell phone tower = x

Height of fence = shadow of fence

Height of tower = shadow of tower

8 feets= 14.5 feets

x feets = 72.5

Cross multiply :

(14.5 * x) = (72.5 * 8)

14.5x = 580 feets

x = 580/14.5

x = 40 feets

Hence, the height of the cell phone tower is 40 feets

3 0
3 years ago
Suppose a basketball team had a season of games with the following characteristics: Of all the games, 60% were at-home games. De
Sedaia [141]

Answer:

E. P(W | H)

Step-by-step explanation:

What each of these probabilities mean:

P(H): Probability of the game being at home

P(W): Probability of the game being a win.

P(H and W): Probability of the game being at home and being a win.

P(H|W): Probability of a win being at home.

P(W|H): Probability of winning a home game.

Which of the following probabilities do you need to find in order to determine the proportion of at-home games that were wins?

This is the probability of winning a home game. So the answer is:

E. P(W | H)

6 0
3 years ago
What is the solution to the equation 7/8 (X -1/2) =49/80
schepotkina [342]

Answer:

the answer of given question is 1/5

3 0
2 years ago
Determine the slope of the linear function. y = -3x + 3
den301095 [7]
I belive this is hard for a 5th grader but my answer is c)2
7 0
3 years ago
Other questions:
  • The length of a rectangle is 2 yd longer than its width. if the perimeter of the rectangle is 40 yd , find its area.
    6·1 answer
  • Just 13 a and b please and thank you
    7·1 answer
  • 5x + 3y = -4<br> y - 2x = 6<br> By substitution
    8·1 answer
  • Music<br> Read aloud<br> 1) Sound effects
    9·2 answers
  • Se the standard algorithm for long division to solve.<br> 5,886 ÷ 18
    7·1 answer
  • Which is the zero of the graph
    11·2 answers
  • LOOK AT THE PICTURE PLEASE
    12·1 answer
  • Kế hoạch đi dã ngoại của một gia đình sẽ bị hủy nếu trời có mây hoặc mưa. Biết xác suất để trời có mây là có mưa là có cả mây và
    11·1 answer
  • Drag each tile to the correct box.
    10·1 answer
  • Pencils are 3 for $0.35. How much would 2 dozen pencils cost?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!