To find the area of a polygon with sides of lengths 3 cm, 4 cm, 5 cm, 12 cm, and 8 cm, we first need to determine the type of polygon and whether it can be defined with those side lengths. Since these lengths do not correspond to a standard polygon (like a triangle or rectangle) and do not form a closed shape, we cannot calculate a definitive area without additional information, such as angles or the arrangement of the sides. If you have a specific polygon in mind or additional details, please provide them for a more accurate calculation.
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The area of rectangle is : 48.0
The area is 12 cm2.
A rectangle that is 2cm by 4cm has an area of 8cm. It also has a perimeter of 12cm.
i need help
12cm x 6cm x 4cm = 288 cubic centimetres