2 dm is two decimetres
The metric deci- prefix means 1/10 (tenth or 0.1)
⇒ 2 dm = 2 x 1/10 m
= 0.2 m
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To find the area of a shape, you need to multiply the length by the width. In this case, the dimensions are given in decimeters (dm). So, the area would be calculated as follows: (3dm x 5dm) + (3dm x 4dm) + (2dm x 1dm) + (2dm x 2dm). This simplifies to 15dm² + 12dm² + 2dm² + 4dm², which equals 33 square decimeters (dm²).
40cm
I believe its 20 cm
They are both the same in measurements
1 decimeter = 10 centimeters20 cm are in 2 dm.