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
andre [41]
2 years ago
10

Im not so good at math ;-;

Mathematics
2 answers:
Harrizon [31]2 years ago
7 0

Answer:

1. A = 660.52 square units. C = 91.11 units.

2. A = 572.56 square units. C = 84.82 units.

3. A = 283.53 square units. C = 59.69 units.

4. A = 254.47 square units. C = 56.55 units.

5. A = 63.62 square units. C = 28.27 units.

6. A = 380.13 square units. C = 69.12 units.

Step-by-step explanation:

The equations for Area and Circumference of a circle are as follows:

  • A = πr², where r is the radius.
  • C = 2πr, where r is the radius.

You are given the radius (or diameter) of each circle which can be substituted into the above equations for <em>r</em>. Diameter is the entire length across the circle through the center, which is equal to 2(r).

1. A = π(14.5)² = 660.5198. The area is approx. 660.52 square units.

C = 2π(14.5) = 91.106. The circumference is approx. 91.11 units.

2. A = π(13.5)² = 572.555. The area is approx. 572.56 square units.

C = 2π(13.5) = 84.823. The circumference is approx. 84.82 units.

3. A = π(9.5)² = 283.528. The area is approx. 283.53 square units.

C = 2π(9.5) = 59.690. The circumference is approx. 59.69 units.

4. Diameter = 18; 18/2 = 9 = <em>r. </em>So, A = π(9)² = 254.469. The area is approx. 254.47 square units.

C = 2π(9) = 56.548. The circumference is approx. 56.55 units.

5. r = 9/2 = 4.5. So, A = π(4.5)² = 63.617. The area is approx. 63.62 square units.

C = 2π(4.5) = 28.274. The circumference is approx. 28.27 units.

6. A = π(11)² = 380.132. The area is approx. 380.13 square units.

C = 2π(11) = 69.115. The circumference is approx. 69.12 units.

Pie2 years ago
3 0

Answer:

1. 660.52

2. 572.56

3. 283.53

4.254.47

5. 63.62

6. 380.13

Step-by-step explanation:

do πr²

r = radius

if you have a diameter like question 4 divide by 2 and you get radius

You might be interested in
SOMEONE HELP I SUCK AT THIS MATH!
77julia77 [94]

Answer:

0.24

Step-by-step explanation:

2.88/12=0.24

4 0
3 years ago
What are the solutions of the quadratic equation? 2 x 2 – 16 x + 32 = 0
Evgen [1.6K]

Answer:

4 - 16 x + 32 = 0

- 16 x = - 4 - 32

- 16 x = - 36

X = 2.25

3 0
3 years ago
Read 2 more answers
Jimmy know the route from his house to his school, and can name each street along the way.
lesantik [10]
A) Mental Map .......
6 0
3 years ago
Which equation represents a circle with a center at (-3,-5) and a radius of 6 units
TEA [102]

Answer:

-3x^2 - 5y^2 = 36

Step-by-step explanation:

x^2+y^2=r^2

7 0
3 years ago
a scientist notes that the number of bacteria in a colony is 50.3, hours later she notes that the number of bacteria has increas
Yuri [45]

The time it would take for the bacteria to reach 1119 is 5.83 hours

<h3>Calculations and Parameters:</h3>

Given the function:

Pt= P_0e^k^t

  • Initial amount= 50
  • amount after 3 hours= 80

To find the exponential growth;

80 = 50e^k^*^3

k= 1.6/3\\k= 0.533

If there is a constant growth, then to get to 1119:

1119= 50e^0^.^5^3^3^*t

3.8 = 0.533*t

t= 5.83 hours

Therefore, it would take 5.83 hours for the bacteria to increase to 1119.

Read more about exponential growth here:

brainly.com/question/2456547

#SPJ1

6 0
2 years ago
Other questions:
  • Darian gets paid $6.35 an hour to help out at his dad's shop. He also mows his neighbor's lawn each week for $25. He earned $119
    10·2 answers
  • How do you solve -5/8?
    7·2 answers
  • What’s is 17 subtract 75
    11·2 answers
  • The driver of a taxi charges $2 every minute plus a pickup fee of $3.
    11·1 answer
  • All points on the circle are the same distance away from the circles ____
    10·1 answer
  • Please help me with #4 i really need it?
    5·1 answer
  • Tranny a method for Simplifying
    8·1 answer
  • 4 14 fraction sensed meaning.
    9·2 answers
  • What is the slope of a line that passes through the points (-4,0) and (0,4)?
    10·1 answer
  • Sofie wrote an odd number on her paper what is a number sofie did not do
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!