Answer: 
Step-by-step explanation:
The formula for the lateral area of a cone 
is:
Where:
is the radius of the circular base of the cone
As we know its diameter 
, its radius is 
is the height of the cone
This is the lateral area of the volcano with the shape of a cone
Abc would be the same order with Def so the coordinate to f is C
When a jogger runs south and then turns west, we have right angle between segment 0.8 mi and segment to the west. So it is legs of the right triangle.
1.7 mi is hypotenuse.
hypotenuse² =(leg1)²+(leg2)²
1.7²=0.8² + (leg2)²
(leg2)²=1.7²-0.8² = 2.25 mi²
leg2=√(2.25 mi²)
leg2=1.5 mi
Answer is 1.5 mi.
JK= 8, because x+3= 2x-5= 19
