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
sleet_krkn [62]
4 years ago
7

A circle has an area of 324π cm2. What is the radius? a. 18 cm c. 18π cm b. 36π cm d. 36 cm

Mathematics
2 answers:
mars1129 [50]4 years ago
5 0

Answer:

a. 18 cm

Step-by-step explanation:

We are given that a circle has an area of 324π cm2. We are required to determine its radius. The formula for the area of a circle with radius r units is;

A=pi*r*r

We plug in the area given and solve for r;

324pi=pi*r^{2}\\\\r^{2}=324\\\\r=18

The radius of the circle is 18 cm

mart [117]4 years ago
4 0

Answer:

a. 18 cm

Step-by-step explanation:

Area of a circle is given by: A=πr²

where r is the radius and A the area.

therefore we substitute A with the value for the area in the question.

324π=πr²

cancelling the factor π on both sides gives: 324=r²

√324=r

r=18cm

You might be interested in
Is 6/7 equal to 3/4?
zheka24 [161]
Ok so, when working to find if a fraction is equal to another you must know what it is cut down by. So 6 / 2 = 3. Now let's break down 7 by 2. It is 3.5 that is not four. So no 6/7 so not equal to 3/4. 
8 0
3 years ago
Read 2 more answers
A coffee machine is considered reliable if the range of amounts of
Xelga [282]

hi guys pls friend me i need freinds pls

8 0
1 year ago
Please please someone help
natka813 [3]

The answer is the first one:

bc its not growing by a (-)1/2  and the 3rd one just doesnt make sense

7 0
3 years ago
Read 2 more answers
Approximate the real number solution(s) to the polynomial function f(x) = x3 + 2x2 − 5x − 6.
nadya68 [22]
F(1) = (1)^3 + 2(1)^2 - 5(1) - 6 = 1 + 2 - 5 - 6 = -8; x = 1 is not a solution to the polynomial.
f(-1) = (-1)^3 + 2(-1)^2 - 5(-1) - 6 = -1 + 2 + 5 - 6 = 0; x = -1 is a solution to polynomial.
From the options, a or c has x = -1, both has x = , so lets check for x = 3
f(3) = (3)^3 + 2(3)^2 - 5(3) - 6 = 27 + 18 - 15 - 6 = 24; x = 3 is not a solution to the polynomial.
Therefore the solutions to the polynomial are x = -3, x = -1, x = 2
6 0
3 years ago
a diver is exploring the water of the great barrier reef she is currently 25 feet from the surface of the water and plans to exp
11111nata11111 [884]

Answer:

6.25

Step-by-step explanation:

she is at 25

she needs to be at 75 which means she needs 50 more feet

at 8 per minute she will reach the depth in 50/8 = 6.25 minutes or 6 minutes and 15 seconds

6 0
2 years ago
Other questions:
  • Ellipse with vertices (0,+6) and passing through the point (2,2) what is the equation ​
    13·1 answer
  • Enter the degree of the polynomial below .
    7·2 answers
  • Aurora has a cell phone plan that charges $65 for phone service plus $12 for each gigabyte of data used each month. If her bill
    6·2 answers
  • Nate runs 5 miles 8 miles each week. Write an expression for the number of miles he runs in N weeks. Find the number of miles Na
    15·1 answer
  •  a farmer can cut 1/3 acre of hay every 25 minutes.
    8·2 answers
  • Which equation is represented by the graph below? choices in picture ​
    15·2 answers
  • What is the following product? 3sqrt4 times sqrt3​
    12·1 answer
  • A village water tank contained some water. The villagers used 10300 litre of the water in the day. A pump supplied 12,700 of the
    15·1 answer
  • A =10<br> a/4 + 1/3 <br> How do I figure out this answer?
    10·1 answer
  • Equations in Iwo V Solve the system by the addition method. 3x+8y=6 3x-8y=6 Select the correct choice below and, if necessary, f
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!