The surface area of the rectangular prism is 238 mm².
Solution:
Area of the rectangle = length × breadth
Area of the top rectangle = 11 mm × 5 mm
= 55 mm²
Area of the second rectangle = 11 mm × 4 mm
= 44 mm²
Area of the third rectangle = 11 mm × 5 mm
= 55 mm²
Area of the bottom rectangle = 11 mm × 4 mm
= 44 mm²
Area of the left side rectangle = 5 mm × 4 mm
= 20 mm²
Area of the right side rectangle = 5 mm × 4 mm
= 20 mm²
Surface area = 55 mm² + 44 mm² + 55 mm² + 44 mm² + 20 mm² + 20 mm²
= 238 mm²
The surface area of the rectangular prism is 238 mm².
