How do you find the surface area of rectangular prisms and cylinders??????
These site has diagrams and formulas for finding surface areas.
http://www.math.com/tables/geometry/surfareas.htm
To find the surface area of a rectangular prism, follow these steps:
1. Identify the dimensions of the rectangular prism: length (l), width (w), and height (h).
2. Calculate the areas of each face:
- The area of the top and bottom faces is given by: A = l * w
- The area of the front and back faces is given by: A = l * h
- The area of the two side faces is given by: A = w * h
3. Sum up the areas of all the faces to find the total surface area:
- Total Surface Area = 2 * (l * w) + 2 * (l * h) + 2 * (w * h)
To find the surface area of a cylinder, follow these steps:
1. Identify the dimensions of the cylinder: radius (r) and height (h).
2. Calculate the area of the circular base using the formula: A = π * (r^2)
3. Calculate the area of the curved surface (lateral surface area) using the formula: A = 2 * π * r * h
4. Sum up the areas of the base and curved surface to find the total surface area:
- Total Surface Area = 2 * (π * r^2) + 2 * π * r * h
Note: In both cases, make sure the units of measurement are consistent, such as all measurements in centimeters or all measurements in inches.
To find the surface area of a rectangular prism, you need to add up the areas of all six sides. The formula for finding the surface area of a rectangular prism is:
Surface Area = 2lw + 2lh + 2wh
where l stands for length, w stands for width, and h stands for height.
To use this formula, you simply need to measure the length, width, and height of the rectangular prism and substitute these values into the formula. Once you have the values, multiply the length by the width, multiply the length by the height, and multiply the width by the height. Then, multiply each of these products by 2 and add the three results together. The sum will give you the surface area of the rectangular prism.
As for finding the surface area of a cylinder, you need to add the areas of the two circular bases and the lateral surface area, which is the curved surface area between the bases. The formula for finding the surface area of a cylinder is:
Surface Area = 2πr² + 2πrh
where r stands for the radius of the base and h stands for the height of the cylinder.
To use this formula, you will need to know the radius and height of the cylinder. The radius is the distance from the center of the base to its edge, and the height is the distance between the two bases. Once you have these values, you can substitute them into the formula. Square the radius, then multiply it by 2π, and multiply it by the height to find the lateral surface area. Multiply the squared radius by 2π to find the area of the circular bases. Finally, add these two areas together to get the surface area of the cylinder.