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
Arlecino [84]
3 years ago
15

What is the area of the button? Use 3.14 for π and round to the nearest tenth. The circumference of a button is 40.8 millimeters

. What is the radius of the button? Use 3.14 for π and round to the nearest tenth. i need this answered quick
Mathematics
1 answer:
Vika [28.1K]3 years ago
4 0

Answer: radius = 6.5millimeters; Area = 132.7m²

Step-by-step explanation:

The circumference of a circle = 2πr

The area of a circle = πr²

The circumference of a button is 40.8 millimeters. Then we can get the radius, thus will be:

Circumference = 2πr

40.8 = 2 × 3.14 × r

40.8 = 6.28r

r = 40.8/6.28

r = 6.5

Radius is 6.5 millimeters

Area = πr²

Area = 3.14 × 6.5 × 6.5

Area = 132.7m²

You might be interested in
7x=5y , find the slope and the y-intercept of each line whose equation is given.
nadezda [96]
Slope would be -7/5. The y intercept would be 5.
4 0
3 years ago
Read 2 more answers
Rectangle A has 7 times the area of rectangle
krok68 [10]
Wa=0.5Wb, Ha=20, Hb is unkown
the area of rectangle a is : Wa*20
the area of rectangle b is : Wb*Hb
Rectangle a has 7 times the area of rectangle b: Wa*20=7*Wb*Hb
Replace Wa with 0.5Wb: 0.5Wb*20=7Wb*Hb => Hb=10/7
7 0
3 years ago
Eighteen less than 7 times a number is the same as 12 more than the number
professor190 [17]

Answer:

7n-18=n+12

Step-by-step explanation:

i guess

7 0
2 years ago
14,219.92 The 9 in the ones place is _______ the value of the 9 in the tenths place.
Elza [17]

Answer:

less

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Student performance across discussion sections: A professor who teaches a large introductory statistics class (197 students) wit
adell [148]

Answer:

The test is not significant at 5% level of significance, hence we conclude that there's no variation among the discussion sections.

Step-by-step explanation:

Assumptions:

1. The sampling from the different discussion sections was independent and random.

2. The populations are normal with means and constant variance

H_0: There's no variation among the discussion sections

H_1: There's variation among the discussion sections

\alpha =0.05

                Df     Sum Sq       Mean sq    F value     Pr(>F)

Section     7       525.01         75             1.87            0.99986

Residuals  189    7584.11        40.13

Test Statistic = F= \frac{75}{40.13} =1.87

Pr(>F) = 0.99986

Since our p-value is greater than our level of significance (0.05), we do not reject the null hypothesis and conclude that there's no significant variation among the eight discussion sections.

3 0
3 years ago
Other questions:
  • Reuben jogs 2.25 miles every
    7·1 answer
  • −4x−6=−5y+2<br><br> Write a formula for G (x) in terms of x
    11·1 answer
  • How many $0.12 pencils can Chloe buy for $4.80?
    7·1 answer
  • How long does it take you and students 2 and 3 to clean up a 12 ft. X 12 ft wall covered in graffiti? Besides the answer (be spe
    8·1 answer
  • A rhombus, which is a quadrilateral with 4 equal sides, is plotted on the coordinate plane. The coordinates of the vertices are:
    6·1 answer
  • Lowest common denominator of 16 5 25 9
    9·1 answer
  • Complete the table of values for the function f(x) = (1/3)x for a, b, and c. x : -2, -1, 0, 1, 2. f(x) : a, b, c, 1/3, 1/9
    5·2 answers
  • A scientist wants to know how many catfish are in
    9·1 answer
  • Please helpppp???????????​
    9·1 answer
  • A design engineer is mapping out a new neighborhood with parallel streets. If one street passes through (4, 7) and (3, 3), what
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!