The <em>surface</em> area of the parallelpiped is equal to 800 square units.
<h3>What is the surface area of a parallelpiped?</h3>
The <em>surface</em> area of the parallelpiped seen in the picture is equal to the sum of the areas of its six faces, which are combination of areas of quadrilaterals and triangles. There are four parallelograms and two squares. Thus, the surface area of the solid is:
A = 2 · 8 · 20 + 2 · 7 · 20 + 2 · 10²
A = 800
The <em>surface</em> area of the parallelpiped is equal to 800 square units.
To learn more on parallelpipeds: brainly.com/question/14950719
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