Geometry and Measurement Question
View this question.
Add this question to a group or test by clicking the appropriate button below.
Grade 10 Geometry and Measurement CCSS: HSN-Q.A.3
Which measurement would be more accurate and why: measuring the length of a driveway, about 20 m long, with a tape measure whose smallest unit is 1/10 of a meter, or measuring the height of a fish tank, about 25 cm tall, with a ruler whose smallest unit is a centimeter? Choose all correct answers.
- The height of the fish tank will be more accurate, since the absolute uncertainty of the measurement will be ±0.5 cm, while the absolute uncertainty in the driveway measurement will be ±5 cm.
- The length of the driveway will be more accurate, since the relative uncertainty of the driveway will be about ±0.3%, while the relative uncertainty of the fish tank's height will only be about ±2%.
- The height of the fish tank will be more accurate, since the absolute uncertainty of this measurement will be ±0.05 cm, while the absolute uncertainty of the driveway will be ±5 cm.
- The length of the driveway will be more accurate, since the relative uncertainty of this measurement will be about ±1%, while the relative uncertainty of the fish tank measurement will only be about ±2%.