Faces of cylinder are circular therefore area must be pi*radius*radius
That is the formula for the top and bottom faces, the circles. However, the main face, the face connecting the two circles, is really a large rectangle bended to fit with the circles. The height of the rectangle is the same as the height of the cylinder. The width of the rectangle is the circumference of the circle (pi * 2 * radius). The formula for a rectangle is width * height. So, the side face is height of cylinder * circumference of circle (pi * 2 * radius.)
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∙ 12y agoCylinder
Cylinder
no is has 2 , 1 on each side.
step 1: if its an open cylinder you have to find the area of both circles by doing radios times radios times pie. (pie equals 3.14). you do this for both circles. step 2:then you find radios the radios of the rectangle
cylinder
1. Find the surface area of the whole cylinder 2. Find the area of one of the two circles on either end of the cylinder 3. Multiply the circle's area by two and subtract their area from the total surface area 4. Now you have the surface area of an unclosed cylinder!
cube root of volume gives side length, then square this to find area of one face.
Its an Cylinder
Cylinder
Cylinder
as you face the motor it is left first cylinder
no is has 2 , 1 on each side.
cylinder??nope
step 1: if its an open cylinder you have to find the area of both circles by doing radios times radios times pie. (pie equals 3.14). you do this for both circles. step 2:then you find radios the radios of the rectangle
2 plane faces, 1 curved face
cylinder
Actually, answer 1 is for the volume, not the surface area. Aside from that, there are lots of ways to bore a hole in a cylinder. If it goes from one base (a flat face) to the other (or part of the way) parallel to the axis, answer 1 is correct (for the volume). If it is not parallel to the axis, or if it is bored from the curved surface of the cylinder, it is much more complicated. Assuming, as in answer 1, that the hole goes all the way from one base to the other parallel to the axis, to get the surface area you would add the surface area of the outer cylinder to that of the hole (just the curved surface portion), and then subtract the areas of the circular holes in the two bases, each of which is pi x the radius of the hole squared. I'm assuming you know how to calculate the surface area of a cylinder. This is the area of the curved surface, which is 2 x pi x the radius x the height, plus 2 x the area of each base, which is pi x the radius squared. ========================================================== Use the formula:- Volume of a cylinder = Pi X Radius squared X Length , to find the volume of a solid cylinder. Repeat the same calculation with the same formula, to find the Volume of the cylinder of fresh air within the cylinder . Subtract the fresh air Volume from the Solid Cylinder Volume. That will be your answer . Think about your problem, then it is dead easy.