I'm guessing you are talking about the surface area of a cone?
<span>Also by length of the edge, do you mean slant height?
Here is the area formula for a cone:
Lateral Area = (<span>π<span> • r •<span> slant height)
Solving for "r" we get:
</span></span></span></span>
radius = Lateral Area / (<span>π<span> • </span></span><span><span>slant height)</span><span><span /></span></span>
When you calculate the radius, you can solve for the height by
height^2 = slant height^2 - radius^2
Answer:
Step-by-step explanation:
You have the following polynomial:
This expression is of the form:
that is, a difference between cubes. The factorization of such a polynomial is given by:
You apply the last expression to the polynomial given in the problem. But first you have:
finally, you obtain:
Answer:
Step-by-step explanation:
Step 1:
Isolate x (1st Equation)
2x + 3y = 0
<u> - 3y = -3y</u>
2x = -3y
Step 2:
Divide both sides by 2
x = -3y/2
Step 3:
Replace the x from 8x with -3y/2 and Solve the equation
8(-3y/2) + 9y = 18
-12y + 9y = 18
-3y = 18
y = -6
Step 4:
Go back to the 1st equation and replace the y from 3y with -6. You are now solving for x. Solve the equation.
2x + 3(-6) = 0
2x - 18 = 0
<u> + 18 = +18</u>
2x = 18
x = 9
Step 5:
Write your final answer.
(x, y) = (9, -6)
It should be 12.5 units^2 :)
Answer:6000 meters
Step-by-step explanation: