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
frozen [14]
3 years ago
9

An anthropology graduate student measures the floor of a round hut and calculates that it has an area of 12.56 square meters. Wh

at is the floors diameter ?
Mathematics
1 answer:
STALIN [3.7K]3 years ago
4 0

Answer:

The diameter of the room is 4 m.

Step-by-step explanation:

Since the hut is round we can assume that the floor is a circle, so in order to find the diameter of the floor we need to use the circle's area which is given by:

circle area = π*r²

In this case we have the area of the floor, so we can solve for "r". We have:

12.56 = π*r²

π*r² = 12.56

r² = 12.56/π

r² = 12.56/3.14 = 4

r = sqrt(4) = 2 m

The diameter is 2*r so the diameter of this room is 4 m.

You might be interested in
The diameter of the circle is 9.7 m . Calculate the length of its circumference. Round to the nearest tenth and remember to use
RSB [31]

Answer:

30.4m

Step-by-step explanation:

Diameter(D) = 2r (radius)

D = 9.7m

r = 9.7m / 2

= 4.85m

C = 2πr

= 2π × 4.85m

= 30.47344873982099m

rounding - Leave it as is if the digit in the tenth is 4 or lower

- round it up if it's 5 or higher.

~~ 30.4m

5 0
2 years ago
The price of a specic model of a new car decreased from $23,000 to $21,000 in one year. What is the
Alex

The decrease is 8.7%

Step-by-step explanation:

Old price = $23000

New price = $21000

Difference = New price - Old price

Difference = 21000 - 23000 = -2000

The negative sign indicates the decrease.

Percent\ decrease=\frac{Difference}{New\ value}*100\\\\Percent\ decrease=\frac{2000}{23000}*100\\\\Percent\ decrease=\frac{200000}{23000}\\\\Percent\ decrease=8.69\%

Rounding off to nearest tenth;

Percent decrease = 8.7%

The decrease is 8.7%

Keywords: difference, percentage

Learn more about percentages at:

  • brainly.com/question/11207748
  • brainly.com/question/11280112

#LearnwithBrainly

3 0
3 years ago
Angie and Kenny play online video games. Angie buys 1 software package and 3 months of game play. Kenny buys 1 software package
andrey2020 [161]

Answer:The cost of one month of game-play =$20


Step-by-step explanation:

Let the cost of one month of gameplay be x

Then cost of game-play bought by Angie =3x.....(1)

and Then cost of game-play bought by Kenny=4x......(2)

Cost of each software package =$50......(3)

The the total cost =240= sum of costs of software bought by both of them and game-play)=50+50+3x+4x

⇒240=100+7x.......→(by adding like terms)

⇒140=7x⇒x=20.....→( dividing both sides by 7 )

∴the cost of one month of game-play =$20



8 0
3 years ago
Read 2 more answers
Suppose that 35% of all voters voted for a recall. Find the mean of the sampling distribution of the proportion of the 3150 peop
Aloiza [94]

Answer:

0.35 is the mean of the sampling distribution of the proportion.

Step-by-step explanation:

We are given the following in the question:

Percentage of voters who voted for recall = 35%

p = 35\% = 0.35

Sample size, n = 3150

We have to find the mean of the sampling distribution.

Formula for mean of sampling distribution:

\mu = p

Putting values, we get,

\mu = 0.35

Thus, 0.35 is the mean of the sampling distribution of people sampled in an exit poll who voted for the recall.

8 0
3 years ago
The functions below show the amount of money Bella and Sweet T had saved after earning money for doing chores.
NeTakaya

Answer:

Bella saves more per chore than sweet t

Step-by-step explanation:

Becuase i just did it

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is 18/36 in simplest form
    14·2 answers
  • Factor completely. 5x^2+44x-9
    15·1 answer
  • Triangle A’B’C’ is a dilation of triangle ABC about point P. Triangle ABC is shown. Side AB is labeled 2 and a half. Side BC is
    14·2 answers
  • Isabella saved 2 nickels today. If she doubles the number of nickels she saves each day, how many days, including today, will it
    5·1 answer
  • Please help...
    11·2 answers
  • Please choose the correct rhyme scheme for the following words (Michelson): fire- lyre- spread- head- me- free *
    10·1 answer
  • The table shows a relationship between the number of
    10·1 answer
  • What is the answer I need to know
    6·2 answers
  • Which explains whether or not a parallelogram can be classified as a rectangle? A parallelogram is also a rectangle. Both quadri
    9·1 answer
  • 1. Approximate the value of<br> √<br> √
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!