Find the volume of the cone. Use the symbol pi in the calculator Round to the tenths
place.

  4.2 cubic inches

Step-by-step explanation:

The formula for the volume of a cone is ...

  V = (1/3)πr^2·h

For your given radius and height, the volume of the cone is ...

 V = (1/3)π(1 in)^2·(4 in) = (4/3)π in^3 ≈ 4.2 in^3

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step-by-step explanation:

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0