The amount of fabric needed = surface area of the rectangular prism (brick) = 146.5 cm²
What is the Surface Area of a Rectangular Prism?
The surface area of a rectangular prism is given as, A=2(wl+hl+hw).
The brick is a rectangular prism. Therefore, the amount of fabric needed to cover the brick would equal the surface area of the brick.
Given the following:
- l = 6 cm
- w = 3.5 cm
- h = 5.5 cm
Plug in the values into the formula:
The surface area of the rectangular prism (brick) = 2(3.5 × 6 + 5.5 × 6 + 5.5 × 3.5) = 146.5 cm²
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