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
Lera25 [3.4K]
2 years ago
15

Find the circumference

Mathematics
2 answers:
tia_tia [17]2 years ago
7 0

Answer:

6.25\pi

Step-by-step explanation:

A circumference of a circle can be determined by this: 2*pi*r

We're given the diameter. Divide that by 2 to get the radius.

6.45/2 = 3.225

Now multiply that by 2*pi. That gives us 2 * 3.14 * 3.225 = 20.253.

This could've also been done easier by doing pi*d where d is the diameter and you give the answer by multiplying them both. Also works, but the above formula is just key to many things and can also be used to derive the simpler one. Hope it helps! :)

ch4aika [34]2 years ago
7 0

Answer:

6.45π OR 20.253 units.

Step-by-step explanation:

Given, Diameter (d) = 6.45 units

Circumference = πd = 6.45π

If, π = 3.14, then,

6.45π

= 6.45 * 3.14

= 20.253 units

Hope it helps ⚜

You might be interested in
A cone has a lateral area of 108 in2 and a base area of 48 in2. What is the surface area of the cone? A. 60 in2 B. 140 in2 C. 12
Andrei [34K]
Based on the given data, the following formula will be useful;
Area of the base, A = pi*r^2
Lateral Area, A(l) = pi*r*sqrt of h^2 + r^2
Surface Area, A(s) = pi*r*(r+sqrt of h^2 + r^2)
Based on the given area of the base, the radius can be calculated and is equal to 3.9088 in. Based on the given lateral area, the h or the lateral edge can be calculated and is equal to 7.8785 in. Given all the information needed, and directly substituting to the above formula for surface area, SA is equal to 156 in^2 (option D)
5 0
3 years ago
Which ordered pair is a solution of this equation? -9x-5y=12
Sidana [21]
-9x-5y=12
C) (2, -6)  -18+30=12
7 0
3 years ago
I Hope That This Ain't A Fairytale
inysia [295]

Answer:

what song?

Step-by-step explanation:

is that a song wrely

5 0
3 years ago
Look at the graph shown:
NNADVOKAT [17]
We are going to base the answer off of the y=mx+b form where m represents slope and b represents the y-intercept.

First, we know that b must be -1 because the line hits the y-axis when y is -1
So this leaves us with either the first or second choice

Then we choose two points to find the slope. I am using (0,-1) and (1,2). If you count the boxes, the y-value increases by 3 as the x-value increases by 1. So the slope is 3/1 or 3.

So then we know the answer is y=3x-1

Hope this helps 
4 0
3 years ago
Sara ran 10km in 2.5 hours. Katerina ran 7.5 km in 2 hours. Candice ran 9.5 km in 2.25 hours. Who had the fastest average speed?
Arisa [49]

10 km ÷ 2.5 hours = 4 km/h — This is Sara's record

7.5 km ÷ 2 hours = 3.75 km/h — This is Katerina's record

9.5 km ÷ 2.25 hours = 4.2 km/h — This is Candice's record

Therefore, the answer is Candice had the fastest average speed.

6 0
3 years ago
Other questions:
  • Give two examples that show how using parentheses can change the order in which operations are performed in an expression
    5·1 answer
  • Julian jogs 2 kilometers east, 4 kilometers north, and then 7 kilometers west
    8·1 answer
  • A toy rocket is launched from a platform 42 feet above the ground at a speed of 91 feet per second. The height of the rocket in
    8·1 answer
  • Do b plz for the expressions
    11·1 answer
  • In which number is the value of 5 ten times the value of 5 in 10.059
    14·2 answers
  • What is equivalent to 5/1,215^x?
    9·1 answer
  • A Christmas jar contains 550 m&ms. Of all the m&ms, 2/5 are green and the rest are red. What is the ratio of green to re
    12·1 answer
  • ( WILL MARK BRAINLIEST IF CORRECT)
    5·2 answers
  • A tablecloth is 82 inches long. What is the length in feet and inches?
    6·2 answers
  • What is 1 and 7/10 <br> as a decimal?<br> 0.17<br> 1.7<br> th<br> 0.7<br> 7.1<br> 1.07
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!