Question

A right rectangular prism has a length of 8 centimeters, a width of 3 centimeters, and a height of 5 centimeters

What is the surface area of the prism?
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Answer 1

158 cm²

Explanation:

Surface Area

• 2(length × width + height × width + length × height)
• 2(8 × 3 + 5 × 3 + 8 × 5)
• 2(24 + 15 + 40)
• 2(79)
• 158 cm²

Answer 2

158 cm²

Explanation:

Given dimensions of the right rectangular prism:

• length (l) = 8 cm
• width (w) = 3 cm
• height (h) = 5 cm

Surface area = 2(wl + hl + hw)

= 2(3 × 8 + 5 × 8 + 5 × 3)

= 2(24 + 40 + 15)

= 2(79)

= 158 cm²