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
faust18 [17]
3 years ago
9

Find the area and the circumference of a circle with radius 7 cm.

Mathematics
2 answers:
natka813 [3]3 years ago
5 0

<em>answers \\ area = 153.86 \:  {cm}^{2}  \\ circumference = 43.96 \: cm \\  \\ solution \\ radius = 7cm \\ area \: of \: circle = \pi {r}^{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  =  \: 3.14 \times  {7}^{2}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 3.14 \times 49 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  =  153.86 \:  {cm}^{2}  \\ circumference \: of \: circle = 2\pi \: r \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 2 \times 3.14 \times 7 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 43.96 \: cm \\ hope \: it \: helps \\ good \: luck \: on \: you r \: assignment</em>

strojnjashka [21]3 years ago
3 0

Answer:

Area \: of \: circle = 153.86 \: {cm}^{2} \\ \\ Perimeter \: of \: circle = 43.96 \: cm

Given:

Radius of circle (r) = 7 cm

Step-by-step explanation:

Area  \: of \:  circle = \pi {r}^{2}  \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = \pi \times  ({7}^{2} ) \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = \pi \times 49 \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = 3.14 \times 49 \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = 153.86 \:  {cm}^{2}

Circumference  \: of  \: circle = 2\pi r \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 2 \times \pi \times 7\\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 14 \times \pi\\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 14 \times 3.14\\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 43.96 \: cm

You might be interested in
What is the equation of the line that passes through the point (-2, -1) and has a<br> slope of ?
enot [183]

Answer:

10

Step-by-step explanation:

6 0
3 years ago
Question 1
Doss [256]
For the answer to the question If the distance from the plane (P) to the tower (T) is 5,000 ft., how far is the bird (B) from the plane (P)? The answer is <span>11,779 feet.
And for the answer to the second question on w</span>hat is the angle of depression from the bird (B) to the observer (O)? The answer is <span>56.31°</span>
7 0
3 years ago
Read 2 more answers
SOMEONE PLS HELP MEE ASAPPP!!
Effectus [21]

I think you would just add 2/3 and 1/3 to get 1 full can of paint. If not sorry.

3 0
3 years ago
Read 2 more answers
Help ill give brainliest ofc
AlladinOne [14]

Answer:

i think it's 59

Step-by-step explanation:

my bad if u get it wrong or anything

5 0
2 years ago
Simplity<br> |10|<br> Right the answer here please
Scrat [10]

Answer:

10

Step-by-step explanation:

The lines surrounding 10 are called positive brackets, meaning the no matter what number is in those brackets, it will always come out of positive.

There is nothing to do with just 10 because we don't need to change anything.

|10| simplified is 10

5 0
3 years ago
Other questions:
  • Currency on hand = 100,000 Brazilian cruzeiros
    8·2 answers
  • There is a bag filled with marbles: 5 red, 8 blue, 4 yellow, and 3 green.
    5·1 answer
  • Find the value of x and y. ( ANSWER NEEDS TO BE IN REDUCED RADICAL FORM )
    9·1 answer
  • Find the other endpoint of the line segment with the given endpoint and midpoint.
    11·1 answer
  • 9 1/3 minus 3 1/4 as a mixed number
    12·1 answer
  • Please help me with the problem above I’ll give brainliest to whoever is correct thank you!
    15·1 answer
  • 6+4-(4x2)+22^3=?? Can someone help!
    9·1 answer
  • How many sides do 4 pentagons and 3 nonagons have in all?
    5·1 answer
  • Broo help me asap :(((((
    14·1 answer
  • a ship leaves port on a bearing of 44.0 degrees, and travels 11.4 mi. the ship turns east and travels 6.2 mi. How far is the shi
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!