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What is the surface area of this rectangular prism 8mm, 5mm, 9mm

2 Answers

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Answer:

314mm^2

Explanation:

2(5x8)=80

2(5x9)=90

2(8x9)=144

80+90+144= 314

User Buffalo
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Answer: The surface area of a rectangular prism can be calculated by finding the area of each face and adding them together.

The rectangular prism has six faces, each of which is a rectangle.

The area of the top and bottom faces is:

8mm x 9mm = 72mm²

The area of the front and back faces is:

8mm x 5mm = 40mm²

The area of the left and right faces is:

5mm x 9mm = 45mm²

To find the total surface area, we add the area of all six faces:

72mm² + 72mm² + 40mm² + 40mm² + 45mm² + 45mm² = 314mm²

Therefore, the surface area of this rectangular prism is 314mm².

Step-by-step explanation: The surface area of a rectangular prism can be calculated by finding the area of each face and adding them together.

The rectangular prism has six faces, each of which is a rectangle.

The area of the top and bottom faces is:

8mm x 9mm = 72mm²

The area of the front and back faces is:

8mm x 5mm = 40mm²

The area of the left and right faces is:

5mm x 9mm = 45mm²

To find the total surface area, we add the area of all six faces:

72mm² + 72mm² + 40mm² + 40mm² + 45mm² + 45mm² = 314mm²

Therefore, the surface area of this rectangular prism is 314mm².

User Erving
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7.9k points

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