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Welcome to How to Find the Surface Area of a Rectangular Prism with Mr. J! Need help with finding the surface area of a rectangular prism? You're in the righ...
- 5 min
- 1.7M
- Math with Mr. J
- Overview
- Finding the Surface Area
- Making the Formula Shorter
A rectangular prism is a name for a 6-sided 3-dimensional figure that is very familiar to everybody—a box.
Think of a brick, or a shoebox, and you know exactly what a rectangular prism is. The
Label the length, width, and height of your rectangular prism.
Each rectangular prism has a length, a width, and a height.
a picture of the prism, and write the symbols
next to three different edges of the shape.
If you're not sure which sides to label, pick any corner. Label the three lines that meet at that corner.
For example: A box has a base that measures 3 inches by 4 inches, and it stands 5 inches tall. The long side of the base is 4 inches, so
You now know enough to find the surface area of any rectangular prism. You can do it faster if you've
some basic algebra. Start with our equation above: Area of a rectangular prism = lw + lw + wh + wh + lh + lh. If we combine all the terms that are the same, we get:
Area of a rectangular prism =
2lw + 2wh + 2lh
If you know how to
, you can make it even shorter:
Jul 16, 2024 · The surface area of a rectangular prism calculator gives us the answer: A = 2 × l × w + 2 × l × h + 2 × w × h = 2 × 8 ft × 6 ft + 2 × 8 ft × 5 ft + 2 × 6 ft × 5 ft = 236 ft². But that is the surface area of the entire prism, and we don't want to tile it all around. After all, if we tile the top, it would be pretty difficult to get ...
The lateral surface area of a rectangular prism can be calculated by finding the sum of all the lateral faces of the prism, i.e. the total area excluding the area of the bases. The formula to find the surface area of a rectangular prism is given as, Lateral surface area of a rectangular prism = 2(l + b) h square units where, l = Length; b = Breadth
K5 Learning offers free worksheets, flashcards and inexpensive workbooks for kids in kindergarten to grade 5. Become a member to access additional content and skip ads. Grade 5 math worksheets on volume & surface area of rectangular prisms. Free pdf worksheets from K5 Learning - no registration required.
Example 1: surface area of a rectangular prism. Calculate the surface area of the rectangular prism. Calculate the area of each face. The area of the bottom is 9×3=27cm2. 9 × 3 = 27cm2. The top face is the same as the bottom face, so the area of the top is also 27cm2. 27cm2. The area of the front is 9×4=36cm2. 9 × 4 = 36cm2.
Jul 6, 2015 · 👉 Learn how to find the volume and the surface area of a prism. A prism is a 3-dimensional object having congruent polygons as its bases and the bases are j...
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