What 2d shapes are you left with if you cut a cone in half (both vertically and horizontally

a = 12 units

Step-by-step explanation:

Equation given is

First we have to evaluate the powers.

= =

= =

So we can now write the equation again as:

Now we have to undo the addition,

Now we have to find the square root of to get the value of

 or

But the length of a leg cannot be a negative value, so we can take the +12.

a = 12 units