Answer:
Step-by-step explanation:
The volume of a cylinder, is given by the formula,
Where, is the radius and
is the height of the cylinder.
Here, ,
. Plug in these values and solve for radius,
.
This gives,
Taking square root both sides, we get
Therefore, the radius of the cylinder can be expressed as .
Answer:
x=9,-1 and
Explanation:
we have been given with the quadratic equation
we compare the given quadratic equation with general quadratic equation
general quadratic is
from given quadratic equation a=1,b= -8,c= -9
substituting these values in the formula for discriminant
Now, to find the value of x
Formula is
Now, substituting the values we will get
And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of