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
Please help help ASAP ASAP
Elenna [48]

Answer:

Step-by-step explanation:

6 0
2 years ago
The variables y and x have a proportional relationship, and y = 25 when x = 60.
jeka94

Answer:

A

Step-by-step explanation:

A. x = 25

4 0
3 years ago
Read 2 more answers
Write a function to represent the point (x,y) being translated of 3 units to the right and 2 units down.
Likurg_2 [28]
The correct answer is C as in cat
4 0
2 years ago
CAN SOMEONE PLEASE HELP!!! :c thank you in advance!
KiRa [710]
Lines A and B are parallel to each other. Lines B and E are perpendicular to each other. 
4 0
3 years ago
Solve for g gg. Give an exact answer. 10 ( 0.4 + 0.5 g ) = 4 g 10(0.4+0.5g)=4g10, left parenthesis, 0, point, 4, plus, 0, point,
kirill115 [55]

Answer:

the value of g is -4

Step-by-step explanation:

10 ( 0.4 + 0.5 g ) = 4 g

Our aim is to solve for g

multiply 10 inside the parenthesis

4+5g = 4g

Now combine like terms

Subtract 5g from both sides

4+5g-5g= 4g-5g

4=-g

Divide both sides by -1

g=-4

5 0
3 years ago
Other questions:
  • A square picture frame measures 36 inches on each side. The actual wood trim is 2 inches wide. The photograph in the frame is su
    12·2 answers
  • Jessies's soccer team won 68% of the games they played. If they won 17 games how many did they play
    9·1 answer
  • Jon wrote the expression shown.
    13·1 answer
  • 1,500 people tried a cream. Nine people had a reaction. What percent of people had a reaction?
    12·1 answer
  • What number can u add to π to get a rational number?<br><br> A. 1/π<br> B. 0<br> C. 2<br> D. -π
    14·1 answer
  • Estimating a decimal sum or difference
    15·1 answer
  • Pls help. Find the surface area of the solid. Round to the nearest tenth if necessary
    10·1 answer
  • Unit 11: Volume and Surface Area Homework 1: Area of Plane Figures- Find Area.
    7·1 answer
  • After paying 13 dollars for the pie, Sally has 104 dollars left. How much money did she have before buying the pie?
    10·2 answers
  • Polynomial of lowest degree with zeros of 3/4 (multiplicity 2) and 1/3 (multiplicity 1) and with f(0) = -81
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!