The answer will depend on how many sides the area has. And since you have not bothered to share that crucial bit of information, I cannot provide a more useful answer.
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you need to multiply the sides.
The surface area of a cube with sides of 4 cm is 6*42 square cm = 96 sq cm. The surface area of a cube with sides of 2 units is 6*22 square units = 24 sq units.
24 cm. sq.
A circle with radius 2.326 cm (approx) Various ellipses. A rectangle with sides 1 cm and 17 cm or with 2 cm and 8.5 cm or 3 cm and 5.667 cm etc or many other regular and irregular shapes.
This is a cuboid so it has six sides. The surface area is the sum of the areas of the sides. Opposite sides are the same. So we have: 2 sides of area 8 x 9 centimetres squared 2 sides of area 8 x 5 centimetres squared 2 sides of area 9 x 5 centimetres squared That's a total of 314 centimetres squared.