Economic power house is northern spain.
Answer:

Explanation:
<em>The options are not well presented; However, the solution is as follows</em>
Given
Shape: Cone

Height = x
Required
Find the radius of the cone
The volume of a cone is:

Where h represents height and r represents radius;
Substitute x for h and
for Volume

Multiply both sides by 3



Multiply both sides by x



Take π as 3.14

Divide both sides by 3.14



Take Square root of both sides


Split the square root



Answer: 7/12
Explanation: To add these two fractions together, we start by finding their common denominator. The common denominator for 3 and 4 is 12.
So we multiply top and bottom of our first fraction by 4 and top and bottom of our second fraction by 3.
That gives us 4/12 + 3/12 which simplifies to 7/12.
I have also shown my work on my whiteboard.
The work is provided in the image attached.
Sorry if my handwriting is a little messy.
The sentence translates to: My notes are in my notebook. Im not sure what you mean by True or False. sorry.Anyway I hope this helped:)