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ISEE Upper Level
Mathematics Achievement

Total Surface Area of a Rectangular Prism

Hard Measurement Surface Area And Volume

A rectangular prism has a length of 12 cm, a width of 8 cm, and a height of 10 cm. What is the total surface area of the prism?

To find the total surface area (SA) of a rectangular prism, use the formula:

$$SA = 2(lw + lh + wh)$$

where:

  • l = length
  • w = width
  • h = height

Given the dimensions, substitute the values into the formula to calculate the total surface area.

Hint

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