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Evgen [1.6K]
3 years ago
9

Help with this one can’t figure it out

Mathematics
1 answer:
NeX [460]3 years ago
3 0
To solve the problem shown in the figure attached, you must apply the proccedure shown below:

 1. You have that the equation for calculate the area of a circle is:

 A=πr²

 2. You have that the formula for calculate the diameter of a circle is:

 d=2r

 Therefore, the radius is r=d/2

 where r is the radius of the circle

 3. Keeping the information above on mind, you have the correct sequence of the equations by clearing the diameter d, is shown below:

 A=π(d/2)²
 A=πd²/4
 4A=πd²
 d²=4A/π
 d√(4A/π)

 Therefore, as you can see, the answer is:

 A=π(d/2)²
 A=πd²/4
 4A=πd²
 d²=4A/π
 d√(4A/π) 
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aliina [53]

Answer:

5/7 of the picture

Step-by-step explanation:

4 0
3 years ago
Hellen is using 3.508 grams of copper for her science experiment. How many kilograms of copper did Hellen use for her science ex
mash [69]

Answer:

.003508 kg of copper

Step-by-step explanation:

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7 0
2 years ago
What is -5/6 + -5/6? (its ment to be a fraction)
maks197457 [2]
The answer is:  " -5/3 " ;  or, write as:  " -1 ⅔ " .
_____________________________________________
Explanation:
_____________________________________________

   (-5/6) + (-5/6) = (-5/6) <span>− (5/6) ;  

------>  {since: "adding a negative" is the same a "subtracting a positive"} ; 

------> </span> (-5/6) − (5/6) = (-5 − 5) / 6  ;
  
                                  =   -10/6 =  (-10/2) / (6/2) ;
_____________________________________________________
                                  =   " -5/3 " ;  or, write as:  " -1 ⅔ " .
_____________________________________________________
8 0
3 years ago
Can someone help me with 10 math questions (:
olga2289 [7]
So volue of a cone=1/3 times (area of base[which is a circle]) times height

area of base=area of circle=pi time radius^2
area=pi times 5^2
area=pi times 25=25pi

1/3 times 25pi times 18
25pi times 18 times 1/3
25pi times 18/3
25pi times 6=150pi


the answer is 150π in^3 or 150π cubic inches or C

( to solve, aprox pi to 3.141592 an multiply 150 by 3.141592=471.239 in^3)
3 0
3 years ago
What is 3,000 is ___ times as muchas 30.
Katen [24]
The answer would be 100 because 100x30 equals to 3,000

I hope this is the answer you were looking for
7 0
3 years ago
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