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
4vir4ik [10]
4 years ago
12

What's the radius of a circle with an area of 64 square feet?

Mathematics
1 answer:
Nady [450]4 years ago
6 0
Area = \pi r ^{2}
64 = \pi r ^{2}
\frac{64}{ \pi } =r^2
r= \frac{ \sqrt{64} }{ \sqrt{ \pi } } = \frac{8}{ \sqrt{ \pi } }

If you want the denominator rationalized, the answer is \frac{8 \sqrt{ \pi } }{ \pi }
You might be interested in
Brainliest to first correct answer.
tester [92]

The answer is x = -0.6 and y = -8.2.

8 0
3 years ago
Expand And Simplify The Following:
Georgia [21]
For all the questions, we will be using the FOIL pattern.
1. (x+3)(x-3)(3x+2)
(x^2-3x+3x-9)(3x+2)
(x^2-9)(3x+2)
3x^3+2x^2-27x-18
2. (2x+1)(x-2)(x+3)
(2x^2-4x+x-2)(x+3)
(2x^2-3x-2)(x+3)
2x^3+3x^2-11x-6
3. (x-3)(2x+1)(3x-2)
(2x^2+x-6x-3)(3x-2)
(2x^2-5x-3)(3x-2)
6x^3-19x^2+x+6
Hope this helped!
8 0
3 years ago
Read 2 more answers
66
likoan [24]

Answer: 230cm²

Step-by-step explanation:

>We can do this by splitting the figure into 2 trapeziums.

>Additionally, you can see that both trapeziums bear the same lengths a and b. Hence, we can use this formula: \frac{1}{2} * (a+b) * (total height).

>Thus,

Area = \frac{1}{2} *(7+16)*20=230

4 0
2 years ago
Read 2 more answers
What is the value of 5a + 7b <br> if a = 4 and b = 3?? <br> a : 41<br> b : 12<br> c : 43 <br> d : 35
MAXImum [283]
<h3>Answer:</h3><h3>41</h3><h3>Step-by-step explanation:</h3><h3>multiplication and addition</h3><h3>5x4=20</h3><h3>7x3=21</h3><h3>20+21=41</h3>
8 0
3 years ago
Read 2 more answers
What is the equation of a line that passes through the points (1,6) and (2,1)?
algol13

Answer:

y = -5x+11

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • The product of three integers is -3. Determine all of the possible values for the three factors
    7·1 answer
  • Write 3,680,225 in expanded form​
    12·1 answer
  • Simplify the number into simplest radical form. Use the factor tree to help determine the factors. StartRoot 96 Endroot StartRoo
    8·2 answers
  • Which of the following points are solutions to the system of inequalities shown below?Check all that apply.y&gt;5x - 2y&lt;5x +
    9·1 answer
  • Select the correct answer.
    6·2 answers
  • (k + 2)x² -(k+ 2)x - 1 = 0<br>+​
    12·1 answer
  • What is the value of y? <br><br><br><br> Thank you :)
    6·2 answers
  • Which quadratic equation has roots of 5 and 7
    15·2 answers
  • The place value of 7 in 87534 is____________​
    15·2 answers
  • The Chinese Buffet costs $9.95 a person. Johnny, his mother, and his father have dinner there, They receive a 25% discount. What
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!