Hello!
To find the surface area of a cube you do

where "a" is the length of one of the sides.
So

= 1350
the answer is 1350mm

Hope this helps!
Answer:
the answer is 85 i thought this to someone and i still remember this
Step-by-step explanation:
A net is a pattern made when the surface of a three-dimensional figure or solid is laid out flat showing each face of the figure. It is then possible to use the net to calculate the surface area of the solid.
Surface Area of a Cube using Nets
A cube is a three-dimensional figure with six matching square faces.
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