Mario says he found the height of a cone that has a volume of 72 cubic millimeters and a diameter of 12 millimeters 72pi = 1/3 * pi * (12 ^ 2) * h 1.72pi = 1/3 * pi * (144) * h 72pi = 48pi * (h) 3.2.5=h Analyze Mario's work. he correct? If not what was his mistake? Yes, he is correct Nohe did not correctly square 12 on the left side Nodid not use the radius measure in the formula No he did not correctly undo the multiplication on the right side

No, he did not use the radius measure in the formula.

Step-by-step explanation:

Step 1:

The volume of a cone is determined by multiplying  with π, the square of the radius (r²) and height (h). Here we substitute π as 3.1415.

Here the value of the radius is substituted in the formula but Mario substituted the diameter. So he was not correct.

Step 2:

The diameter of the cone is 12 mm, so its radius is 6 mm and the height is taken as h.

The volume of the cone is given as follows

The volume of the cone;

1.

2.

3.

This should have been how Mario solved the problem.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,