The formula for a cylinder's surface area is :

in this question, h=x.
Let's plug the values in the formula
The answer i got was
-8+4r
A cone always contain a right angle.
To solve for the volume of a cone, we need to get the radius of the cone and its height.
Volume of a cone = π r² h/3
radius is the line from the center of the circle of the cone going to the edge of the circle.
height is the measurement of the cone from its pointy tip going downward.
Assuming the radius of the cone is 3 in. and its height is 6 inches.
Volume of a cone = π * r² * h/3
V = 3.14 * (3in)² * 6in/3
V = 3.14 * 9in² * 2in
V = 56.52 in³
Answer:
equation: f+n=15
after folding 6: he would have 9 left or n=9
Step-by-step explanation:
f+n=15
6+n=15
subtract 6 from both sides
n=9