Module 1: The International System of Units (SI)
SC 2.
Since 1 m2 = 10 000 cm2 or 104 cm2, there will be fewer m2. So, divide by 10 000 or 104.
The area of the flag is 2048 cm2 or 0.2048 m2.
Another way to solve this problem is to change the dimensions to metres first.
SC 3. Answers will vary. A sample answer is given.
The switch cover was measured in centimetres.
length = 12.5 cm and width = 8 cm
Since 1 cm2 = 100 mm2, or 102 mm2, there will be more square millimetres. So, multiply by 100 or 102.
The area of the switch cover is 100 cm2, or 10 000 mm2.
Another way to solve this problem is to change the dimensions to millimetres first.
SC 4. Answers will vary. A sample answer is given.
The area of a computer disk is most easily understood in square centimetres since square millimetres is too small a unit, and square metres is too large.
SC 5.
The area of the sheet of paper is about 608 cm2.
SC 6. Answers will vary. A sample answer is given.
The area of my room is 12 m2, since it is 4 m long and 3 m wide. I can imagine 12 m2 much more easily than 120 000 cm2 or 12 000 000 mm2.