It is 320000 mm2 or 0.32 square metres.
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To convert millimeters to inches, you can use the conversion factor of 1 millimeter being equal to 0.0393701 inches. So, for 800 mm, you would multiply 800 by 0.0393701 to get approximately 31.4961 inches. Similarly, for 400 mm, you would multiply 400 by 0.0393701 to get approximately 15.748 inches. Therefore, 800 mm x 400 mm is equivalent to approximately 31.4961 inches x 15.748 inches.
400 x 2 = 800
400 mm x 400 mm = 0.4 m * 0.4 m = 0.16 sq metres. So 1 metre squared contains 1/0.16 = 6.25400 mm x 400 mm = 0.4 m * 0.4 m = 0.16 sq metres. So 1 metre squared contains 1/0.16 = 6.25400 mm x 400 mm = 0.4 m * 0.4 m = 0.16 sq metres. So 1 metre squared contains 1/0.16 = 6.25400 mm x 400 mm = 0.4 m * 0.4 m = 0.16 sq metres. So 1 metre squared contains 1/0.16 = 6.25
20% of 2000 = 2000*20/100 = 400 50% of 400/50% = 400*100/50 = 800 So 50% of 800 equals 400, which is 20% of 2000.
To find the percent of a number, you have to make a ratio. 8 x 400 = 100 You have to cross multiply: 800=400x and divide. 800/400=x 2=x 2% of 400 is 8.