Calculate and round to the correct number of significant digits.8. 37.64 cm 12.5 cm9. 3.5 ft. × 4.218 ft.10. 3.45 in. + 4.2 in.
Question
Calculate and round to the correct number of significant digits.
- 8. 37.64 cm 12.5 cm
- 9. 3.5 ft. × 4.218 ft.
- 10. 3.45 in. + 4.2 in.
Solution
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The operation is not specified for 37.64 cm and 12.5 cm. If it's addition or subtraction, the result would be 50.14 cm or 25.14 cm respectively.
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For multiplication of 3.5 ft. and 4.218 ft., the result is 14.763 ft². However, considering significant digits, it should be rounded to 15 ft² because 3.5 has the least number of significant digits (2).
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For the addition of 3.45 in. and 4.2 in., the result is 7.65 in. However, considering significant digits, it should be rounded to 7.7 in. because 4.2 has the least number of decimal places (1).
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