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
ivann1987 [24]
3 years ago
15

Find the radius of a circle with an area of 615.75 sq kilometers?

Mathematics
1 answer:
Olegator [25]3 years ago
4 0

area = pi x r^2

615.75 = 3.14 x r^2

r^2 = 615.75/3.14 =196.0987 round to 196.1

r = sqrt(196.1) = 14.00357 round to 14

radius = 14 kilometers

You might be interested in
Wahaj buys a pizza for rs 800.A week later,the same piza costs rs 900.When wahaj asks the manger for the reason ,he explain that
lions [1.4K]

Answer:

12.5%

Step-by-step explanation:

The price increased from 800 to 900. So what is the PERCENTAGE INCREASE??

The increase is 900 - 800 = 100

To find this in terms of original, we need to divide 100 by 800 and multiply by 100 to get the "percentage". Let's do it:

\frac{100}{800}*100=12.5

So the increase is 12.5% and thus the general sales tax is 12.5%

6 0
2 years ago
Let F(x,y)=1+sqrt(4-y^2). . (a) Evaluate F(3,1). (b) Find and sketch the domain of F. (c) Find the range of F
charle [14.2K]
The goal of this function is to get  a positive value under the square root sign so that the value would not be invalid. Evaluating F(3,1), the value is 1 + <span>sqrt(4-1^2) or equal to 1 + sqrt of 3.</span> In this case, the domain would be x equal to any numbers and the range equal to numbers from -2 ≤ y ≤ 2. 
6 0
3 years ago
Read 2 more answers
The figures in the picture are similar to each other find the value of x
alisha [4.7K]

Answer:

x = 7

Step-by-step explanation:

Similar figures have sides that are proportional.  Setting up a proportion for the sides of the figures will help solve for 'x':

\frac{small}{large}=\frac{3}{6}=\frac{(x-3)}{(x+1)}

Cross-multiply:  3(x + 1) = 6(x - 3)

Distribute:  3x + 3 = 6x - 18

Combine like terms:  21 = 3x

Solve for 'x':  x = 7

6 0
2 years ago
A is 60% of B , B is 30% of C, what percentage of C is A
zaharov [31]
A is 30% more than B. So, A = B + 30% of B = B + 30/100 *B = B + 3/10 *B = 13/10 *B. B is 60% less than C. So, B = C - 60% of C = C - 60/100 *C = C - 3/5 *C = 2/5 *C.
5 0
3 years ago
Lisa is buying a shirt and a hat at the mall. The shirt costs $30.98, and the hat costs $20.01. If she gave the sales clerk $100
Paha777 [63]

$49.01 would be her change

4 0
2 years ago
Read 2 more answers
Other questions:
  • Graph the equation on the cordinate plane y = -2x
    10·1 answer
  • Please help me........​
    14·1 answer
  • Allen's unpaid credit card balance was $3,426.67 his APR is 16.8% what is his new balance after he makes one new transaction for
    12·2 answers
  • 9,6,3,0,-3,-6 work out the nth term (it decrease by the same amount each time)
    12·2 answers
  • X+y=3<br>2x-y=3 <br>using elimination method​
    10·2 answers
  • Let x,y \epsilon R. Use mathmatical induction to prove the identity.
    5·1 answer
  • U should rly help plz
    14·1 answer
  • PLEASE HELP I WILL GIVE YOU BRAINLIEST
    9·1 answer
  • Please help asap!! I will mark you as brainliest :)
    13·2 answers
  • If you prove that △ABD is congruent to △CDB, which general statement best describes what you have proved?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!