0.4 square decimeter =0.004 square meter. Turn what needs to be consumed into square meters.
1.24+0.004= 1.244 square meters add up to figure out what a * * needs.
Answer: Prepare 1.244 square meters of plastic board.
0.6×0.4×0.5=0. 12 (cubic decimeter) Because the thickness can be ignored, the volume can be directly calculated by the formula V=abh.
A: The volume of this plastic box is 0. 12 cubic decimeter.
Is it a supplementary exercise for primary school mathematics, or the first volume of the sixth grade?