To find: the lateral area and surface area of a rectangular prism.
Answer to Problem 12.5.2EP
The lateral area and surface area are respectively
Explanation of Solution
Given:
Length is 5 cm.
Width is 9 cm.
Height is 3 cm.
Formula used:
Lateral area of the prism is
Total surface area of the prism is
Calculation:
Lateral area of the prism is
Here P is the base perimeter and h is the height.
Total surface area of the prism is
Here 2B is the area of two bases.
Perimeter of the base of a rectangular prism is
Area of the base is
Height is h = 3cm.
Lateral area is
Surface area is
Conclusion:
Hence, the lateral area and surface area are respectively
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