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
The polygons are similar. The area of one polygon is given. Find the area of the other polygon,
xxMikexx [17]

Answer:

glizzy

Step-by-step explanation:

glizzy

6 0
4 years ago
PLEASE HELP FAST ILL GIVE 5 STARS!!!!
MArishka [77]
I believe it's Line y=-x+2 and y=3x+1 intersect the y-axis. From what I've gathered, they are parallel lines, and both are set on the y-axis.
8 0
3 years ago
Read 2 more answers
Anita is years older than Basilio. Three times Anita's age added to six times Basilio's age is 36. 1. Define the variables 2. Cr
Scilla [17]

Answer :Anita's age = 7 years

Basilio's age = 2.5 years

Step 1. Assign variables to Anita's and Basilio's ages.

Anita's age = A

Basilio's age = B

 

Step 2. Use the information given to form two equations.

Anita is 4-1/2 years older than Basilio

A = 4.5 + B

 

Three times Anita's age added to six times Basilio's age is 36

3A + 6B = 36

 

Step 3. Substitute the value of A from first equation in to the second equation and solve for B

3(4.5 + B) + 6B = 36

13.5 + 3B + 6B = 36

13.5 + 9B = 36

9B = 36 - 13.5

9B = 22.5

B = 22.5/9 = 2.5

 

Step 4. Find the value of A

A = 4.5 + 2.5 = 7

 

Answer:

Anita's age = 7 years

Basilio's age = 2.5 years

6 0
3 years ago
What is the mass of a solid ball of iron with a radius equal to 18 cm if it is known that the density of iron is 7800 kg/m
Shtirlitz [24]

Answer:

60.6528 kg

Step-by-step explanation:

Assuming the solid ball of iron is a sphere with a radius of 18 cm (or 0.18 m), we can compute the volume of the sphere:

V=\frac{4}{3}\pi r^3\\\\V=\frac{4}{3}\pi (\frac{18}{100})^3\\\\V=\frac{4}{3}\pi (0.005832)\\\\V=0.007776

Therefore, the volume of the solid ball is 0.007776 m³

Since we know that density is mass/volume, then we can find the mass of the iron:

\rho=\frac{mass}{volume}\\ \\7800\: kg/m^3=\frac{mass}{0.007776\: m^3}\\\\mass=60.6528\:kg

Thus, the mass of the solid ball of iron is 60.6528 kg

8 0
3 years ago
Identify the factors of the terms of the expression 5+6a+11b
KatRina [158]
5 + 6a + 11b

terms: 5; 6a; 11b

Factors of 5: 1; 5
Factors of 6a: 1; 2; 3; 6; a; 2a; 3a; 6a
Factors of 11b: 1; 11; b; 11b
4 0
3 years ago
Other questions:
  • Which of the following inequalities is equivalent to 8 ≤ x
    10·1 answer
  • The Smiths spend 11% of their budget on entertainment. Their total budget this year is $2,000 more than last year, and this year
    7·1 answer
  • How to change 7 out of 50 to a percentage.<br> how to change 18 out of 20 to a percentage.
    12·2 answers
  • Write 2 1/16 as decimal <br> (that is not a 21)
    12·1 answer
  • HELP PLS i need this right now
    8·1 answer
  • There are only blue yellow and green cubes in a bag
    12·1 answer
  • What expression is equivalent to 3(x + 6)?
    15·2 answers
  • Simplify: (x^2+2x-1)-(x+1)
    5·2 answers
  • PLS help with this- you dont NEED to show work but it will give u brainliest lol
    15·2 answers
  • Which process will transform Figure A onto Figure B ?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!