300 mm x 15 cm x 20 mm = (30 x 15 x 2) cubic centimeters, or 900 cc.
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20 cm / 3m = 20/300 = 1/15 ( = 0.066...) of them.
Multiply 20 x 15 x 78 = 23400 cubic cm = 1428 cubic inches
1 cm = 10 mm 2 cm = 20 mm . . . 9 cm = 90 mm 10 cm = 100 mm 20 cm = 200 mm 30 cm = 300 mm
You times the Length times the Width times the Height. L*W*H= your answer Example: What is the volume of the box? The base is: 20 cm, the height is: 30 cm, and the width is 10 cm. 20 times 30 times 10= 600 times 10= 6,000 cm So the area of the box is: 6,000 cm
p=2L+2W p=2(150)+2(15) p=300+30 p=330