Net of a cube

We can fold this net to form a cube with a side length of 20 units. What is the surface area of the cube in square units?

Correct answer:

S =  2400

Step-by-step explanation:

a=20 S=6 a2=6 202=2400

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Math student
A piece of dry ice is in the shape of a cube with edge lengths of 7cm. Find the surface area of the dry ice.

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