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
mina [271]
2 years ago
12

The area of a circle is 18.31cm2.find the length of the radius rounded to 2dp

Mathematics
1 answer:
attashe74 [19]2 years ago
8 0

Answer:

r = 2.41

r = \sqrt{\frac{A}{\pi (22/7)} }

   = \sqrt{\frac{18.31}{\pi (22/7)} }

    = 2.41

You might be interested in
To finance a bridge costing $94,500, the state contributed twice as much as the county and the county contributed twice as much
bearhunter [10]
The city contributed $13,500; the county contributed $27,000; and the state contributed $54,000.

Let x be the amount the city contributes.  Since the county contributes twice as much as the city, the county's amount is 2x.  Since the state contributes twice as much as the county, the state's amount is 2(2x) = 4x.

They total 94,500:
x+2x+4x = 94500
7x = 94500

Divide both sides by 7:
x = 13500
2x = 27000
4x = 54000
5 0
3 years ago
17) x =<br> (6x-7)<br> (103-x)
Firlakuza [10]

Answer:

6B = F8

Step-by-step explanation:

5 0
3 years ago
Determine whether the conjecture is true or false. Give a counterexample for any false conjecture.
AnnyKZ [126]

Answer:

The Answer is C. false; m =-2 or m=2

Step-by-step explanation:

This is because:

2*2=4 being 4+6=10 Making 2 true, but

-2*-2= 4 as well making it 4+6=10, Making -2 true as well.

6 0
3 years ago
Read 2 more answers
Math experts please help​
Licemer1 [7]

Answer:

The answer is 64

Step-by-step explanation

Lines JK and HI are congruent therefore making the 60 degree angle on line JK can also be used to find the rest of triangle <HAI, and triangles always add up to 180 degrees

8 0
3 years ago
How do you find the measure of ECF?
tigry1 [53]

Answer:

37°

Step-by-step explanation:

∠ECF= ∠ACG

∠ACG= 90° - ∠GAC= 90° - 53°= 37°

6 0
3 years ago
Other questions:
  • 7. Are the two lines parallel, perpendicular, or neither? Explain your answer. Show work needed to answer the
    11·1 answer
  • Please heros of the internet i need assistance
    15·1 answer
  • 40. Danielle's living room is a rectangle with the dimensions 16 feet
    11·2 answers
  • What is the difference of the fractions? Use the number line to help find the answer.
    14·2 answers
  • Find the equation of the line parallel to 3x-6y=5 and passing through (-2,-3). Write the equation in slope-intercept form
    11·1 answer
  • What number is 25% of 7/8?
    15·2 answers
  • Points A, B, C, and D are connected by segments.
    9·1 answer
  • Find the slope of the line perpendicular to AB. A(3, 5) and B(3, -8).
    6·1 answer
  • Timothy puts $1,500 into a savings account. He receives a
    12·2 answers
  • HELP PLZZ!!!!!!!! Look at this equation: 2 H2 + O2 --&gt; 2 H2O. Why isn't there any coefficient in front of oxygen?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!