How do you find the surface area of a rectangular prism though? I have (I think) the same question. 15mm = length | 3 mm = width | 4 mm = height. How do you solve it?
1=D
2=D
3=A
4=C
smith is right thank 100
A rectangular prism looks like a box.
https://www.wikihow.com/Find-the-Surface-Area-of-a-Rectangular-Prism
It has 6 sides, 2 surfaces on one side, 2 surfaces on the second side, and 2 surfaces on the third sides.
SA = (2 * wh) + (2 * wl) + (2 * lh)
What answer do you get?
To find the surface area of a rectangular prism, you need to add up the areas of all the individual faces.
First, let's identify the faces of the rectangular prism:
1. The top and bottom faces (rectangles) have dimensions of length x width.
2. The front and back faces (rectangles) have dimensions of width x height.
3. The left and right faces (rectangles) have dimensions of length x height.
Next, calculate the area of each face by multiplying the length by the width, the width by the height, and the length by the height.
For example, using the measurements you provided:
Length = 15 mm
Width = 3 mm
Height = 4 mm
So, the calculations for the surface area are:
1. Top and bottom faces:
Area = 15 mm x 3 mm = 45 mm² (for both faces)
2. Front and back faces:
Area = 3 mm x 4 mm = 12 mm² (for both faces)
3. Left and right faces:
Area = 15 mm x 4 mm = 60 mm² (for both faces)
Finally, add up all the areas to find the total surface area:
Total Surface Area = (45 + 45) mm² (top and bottom) + (12 + 12) mm² (front and back) + (60 + 60) mm² (left and right)
= 90 mm² + 24 mm² + 120 mm²
= 234 mm²
Therefore, the surface area of the given rectangular prism with a length of 15 mm, width of 3 mm, and height of 4 mm is 234 mm².