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
photoshop1234 [79]
3 years ago
13

Describe the effect on the area of a circle when the radius is doubled

Mathematics
1 answer:
galina1969 [7]3 years ago
5 0

Answer:

The original area would be multiplied by the scale factor of 2² to get the new area.

Step-by-step explanation:

If you double the radius lets so lets do an example

(a=πr²) so

if x is the radius the area would be x²π      

double the radius so 2x then the area would be

(2x)²π so 4x²π

4x²π/x²π= 4 so its 4 times greater or

D the last answer or The original area would be multiplied by the scale factor of 2² to get the new area.

You might be interested in
Kelvin claims that a pol yhedron can have 30 edges , 18 faces and 12 vertices . Do you agree with him ? Explain your answer .
AURORKA [14]
Number of faces + (Number of vertices - Number of edges) = 2
So plugging in the numbers it would then be 
18+(12-30)=2
18-18=2
0=2
Kelvin would be wrong and I disagree with him. (Because ...*plugin work cited above*)
5 0
3 years ago
A rectangle has a length of 9.00 inches and a width of 4.25 inches. What is the area in square inches? Round to the correct sign
mash [69]
3 sig figs
multiply
9.00*4.25=38.25
round to 3
38.3 square inches
5 0
2 years ago
Mr. Sanchez has 16 feet of fencing to put around a rectangular garden. He wants the garden to have the greatest possible area. H
kolezko [41]
To create a garden w/ the largest area you want to make a garden that is a square or as close as possible 16 is a perfect square # so the sides should be 4 ft each
3 0
3 years ago
Read 2 more answers
Raul raised 4 to a power, multiplied the result by 5 and then added 1. The result was 321. to what power did raul raise 4?
Mashutka [201]
P is the power.

(4^p)•5+1=321

Solve for p.

8 0
3 years ago
A sensitive measuring device is calibrated so that errors in the measurements it provides are normally distributed with mean 0 a
Artemon [7]

Answer: 0.9660

Step-by-step explanation:

Given: Mean : \mu =0

Variance : \sigma^2=2.00

⇒ Standard deviation : \sigma = \sqrt{2}

The formula to calculate z is given by :-

z=\dfrac{x-\mu}{\sigma}

For x= -3

z=\dfrac{-3-0}{\sqrt{2}}=-2.12132034356\approx-2.12

The P Value =P(z

For x= 3

The P Value =P(z

\text{Now, }P(-3

Hence, the probability that a given error will be between -3 and 3=0.9660

3 0
3 years ago
Other questions:
  • 0=x^2-4x+3 how many roots does this equation have
    9·1 answer
  • Please help me with this question ( In the pic)
    8·1 answer
  • What is Z +9÷4 = 2 .1
    5·1 answer
  • Someone find area and perimeter of this shape! Thanjs
    9·2 answers
  • Form and solve an equation for x.<br> 6x +40<br> Х<br> 3x + 100
    11·1 answer
  • Someone please help I don’t understand sad face
    13·2 answers
  • Indira is using a number line to add Negative 1 + (negative 3). She begins by showing –1 on the number line, as shown below.
    10·2 answers
  • What is this? Please help!!
    12·1 answer
  • Explain how to find the mean of a data set.
    12·2 answers
  • When my 8th grader friends cant even answer this welp me neither help?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!