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
ryzh [129]
3 years ago
8

Am stuck on this question and show your working please.

Mathematics
1 answer:
Tamiku [17]3 years ago
5 0

Answer:

1. 6pi or 18.84cm

2. 20pi or 62.8cm

3. 13pi or 40.82cm

4. 9.5pi or 29.83cm

5. You calculate the circumference of a circle with the expression 2pi(r). r stands for the radius. You can also use pi(d), or pi x diameter.

7. You would use 2pi(r) to find the circumference of a circle when given the value of the circle's radius.

8. You would use pi(d) to find the circumference of a circle when given the value of the circle's diameter.

You might be interested in
Write the standard form of the line that passes through the given points (6,1) and (5,4)
Serggg [28]

The standard form:

Ax+By=C

The point-slope form:

y-y_1=m(x-x_1)

m - slope

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

We have the points (6, 1) and (5, 4). Substitute:

m=\dfrac{4-1}{5-6}=\dfrac{3}{-1}=-3

y-1=-3(x-1)      <em>use distributive property</em>

y-1=-3x+3          <em>add 1 to both sides</em>

y=-3x+4         <em>add 3x to both sides</em>

\boxed{3x+y=4}

7 0
3 years ago
IT WUU Tate for school on a
Blizzard [7]

Answer:

Number of students = 441 Students

Step-by-step explanation:

Given:

Percent of women = 40%

Percent of women = 35.5%

Total number of people = 1,800

Find:

Number of students

Computation:

Percent of student = 100% - 35.5% - 40%

Percent of student = 24.5%

Number of students = 1,800 x Percent of student

Number of students = 1,800 x 24.5%

Number of students = 441 Students

3 0
3 years ago
20 hundreds equals how many thousands?
RideAnS [48]
I think you mean how many thousands equal 20 hundreds. Well it's simple, 20 hundreds equal 20*100 which equals 2,000. Therefore, 20 hundreds equals 2 thousands.
8 0
3 years ago
Read 2 more answers
​
pashok25 [27]

Answer:

Let's call:

f = price of 1 cup of dried fruit

a = price of 1 cup of almonds

In order to build the linear system, you need to consider that the total price of a bag is given by the sum of the price of cups times the number of cups in each bag, therefore:

Solve for a in first equation:

a = (6 - 3f) / 4

Then substitute in the second equation:

41/2 f + 6 · (6 - 3f) / 4 = 9

41/2 f + 9 - 9/2 f = 9

16 f = 0

f = 0

Now, substitute this value in the formula found for a:

a = (6 - 3·0) / 4

  = 3/2 = 1.5

Hence, the cups of dried fruit are free and 1 cup of almond costs 1.5$

Step-by-step explanation:

8 0
2 years ago
Sum of the radius of the base and height of a cylinder is 21 cm and the curved surface area of the cylinder is 616 sq.cm,find th
Kobotan [32]

Step-by-step explanation:

lets radius be r and height be h,

r+h=21 -----(1)

curved surface area

2×pi×r×h=616 -----(2)

use simultaneous eqn to solve for r and h.

total surface area of cylinder= 2×pi×r×h + 2×pi×r²

= ans if im not wrong

4 0
3 years ago
Other questions:
  • Zoe is planning to adopt 2 pets. She is equally likely to choose a dog or cat for each pet. Zoe modeled her choices with an expe
    15·1 answer
  • Find the equation of the line
    12·1 answer
  • Give me a problem where the negative square root is not an integer please
    5·1 answer
  • Is 6/4 rational or irrational?
    14·2 answers
  • And art museum had 275,760 visitors last year. The museum is open every day every year except for five holidays.how many visitor
    6·2 answers
  • A company has 2 photocopy machines. The probability that machine a will break down on a given day is 2%. The probability that a
    11·1 answer
  • In July, Jannat did yard work for a total of 26 hours. For
    7·1 answer
  • Which situation would result in a value of O?
    7·1 answer
  • I need help, the question is “What is the slope, m, and y-intercept for the line that is plotted on the grid below?”
    6·1 answer
  • vitamins and minerals, 5 boxes of protein powders, and 1 box of probiotics. At the end of the month, how many boxes have been de
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!