The surface area of a prism can be calculated by adding the areas of all its faces.
In this case, the prism has two identical rectangular faces with dimensions 15mm x 4mm, and four identical square faces with dimensions 3mm x 3mm.
The area of each rectangular face is 15mm x 4mm = 60mm².
The area of each square face is 3mm x 3mm = 9mm².
Therefore, the total surface area of the prism is:
2 x 60mm² + 4 x 9mm² = 120mm² + 36mm² = 156mm²
So, the surface area of the prism is 156mm².
What is the surface area of the prism?
height is 4mm width is 3mm and base is 15 mm
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