i need some help with determing surface areas of rectangular solids please.

thank-you

i found this:

Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac

(a, b, and c are the lengths of the 3 sides)

In words, the surface area of a rectangular prism is the are of the six rectangles that cover it. But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same.

The area of the top and bottom (side lengths a and c) = a*c. Since there are two of them, you get 2ac. The front and back have side lengths of b and c. The area of one of them is b*c, and there are two of them, so the surface area of those two is 2bc. The left and right side have side lengths of a and b, so the surface area of one of them is a*b. Again, there are two of them, so their combined surface area is 2ab.

how do you determine wether a decimal is a terminating decimal or a repeating decimal

well, repeating decimals just keep on repeating, like 0.0666...the 6 just keeps on repeating. or like .063490634906..the 06349 keeps on repeating.

terminating decimals end, like 0.75. or 025. or 0.125

75%

75%

75%

Of course, I'd be happy to help you with determining surface areas of rectangular solids!

To find the surface area of a rectangular solid, you'll need to know the lengths of its three dimensions: length (l), width (w), and height (h). The formula for finding the surface area is:

Surface Area = 2lw + 2lh + 2wh

To calculate the surface area, you'll need to follow these steps:

1. Measure the length (l), width (w), and height (h) of the rectangular solid using a ruler or any other measuring tool.

2. Once you have the measurements, plug them into the formula: Surface Area = 2lw + 2lh + 2wh

3. Multiply the length (l) by the width (w) and multiply the result by 2.

4. Multiply the length (l) by the height (h) and multiply the result by 2.

5. Multiply the width (w) by the height (h) and multiply the result by 2.

6. Add all three resulting values together. This will give you the total surface area of the rectangular solid.

Here's an example to illustrate the process:

Suppose you have a rectangular solid with a length of 5 cm, a width of 3 cm, and a height of 4 cm.

Using the formula Surface Area = 2lw + 2lh + 2wh:

Surface Area = (2 * 5 * 3) + (2 * 5 * 4) + (2 * 3 * 4)
= 30 + 40 + 24
= 94 square centimeters

So, the surface area of the given rectangular solid is 94 square centimeters.

I hope this explanation helps you understand how to determine the surface area of a rectangular solid. Let me know if you have any further questions!