All categories

3 years ago

The area of a circle is 36/pi cm^2 What is the radius of the circle?

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

5 0

Answer:

the radius of the circle is 6cm

Step-by-step explanation:

the area of a circle is given to be = 36πcm²

radius of the circle = ?

to find the radius of the circle lets start by applying the formula for finding the area of a circle.

area of a circle = πr²

36πcm² = πr²

36π = πr²

divide both sides by π

36π/π = πr²/π

36 = r²

to get the value of r we are going to look for a way of getting rid of the square on "r" by squaring 36

r² = 36

r =√36

r = 6cm

therefore the radius of the circle is 6cm

You might be interested in

Anna,Vickie, and Luanna are sisters. Anna is 3 years older thank Vickie, and Luanna is 2 years younger than Vickie. Use v for Vi

Dafna11 [192]

Anna= a
Vickie= v
Luanna= l

a is 3 years older that v
l is 2 years younger than v

Anna's age; 3+v
Luanna's age; v-2

3 0

3 years ago

7/7q+21= x /5q^2-45 then x=?

anzhelika [568]

Answer:

x = 5q - 15

Step-by-step explanation:

$\frac{7}{7q+21}=\frac{x}{5q^{2}-45}\\\\\frac{7}{7(q+3)}=\frac{x}{5 (q^{2} -9)}\\\\frac{1}{q+3}=\frac{x}{5*(q^{2}-3^{2})}\\\\\frac{1}{q+3}=\frac{x}{5(q+3)(q-3)}\\\\\frac{1}{q+3}*5*(q+3)(q-3)=x\\\\5(q-3)=x\\\\x= 5q-15$

3 0

3 years ago

One-third of a number decreased by six equals eight. What is the number?

love history [14]

Answer:

Step-by-step explanation:

8+6=14

14×3=42

6 0

4 years ago

-p/3 - 8 = -3 I need the show work too

professor190 [17]

Answer:

-15

Step-by-step explanation:

-3+8-5. 5x3=15 and because it is -p it would be -15.

3 0

3 years ago

A bag contains 5 blue marbles, 2black marbles ,and 3 red marbles. A marine is randomly drawn from the bag The probability of not

Juli2301 [7.4K]

<h3>Answers:</h3>

The probability of not drawing a red marble is 7/10

The probability of drawing a red marble is 3/10

=======================================================

Explanation:

We have 3 red marbles out of 5+2+3 = 10 total. Therefore, the probability of selecting a red marble is 3/10.

The probability of not selecting a red marble is 7/10 because 3/10+7/10 = 1. Put another way, we have 7 marbles that aren't red (the 5 blue and 2 black ones) out of 10 total.

7 0

4 years ago