Measurements made in the science lab must be as accurate as possible. Ravi measured the length of an iron rod and said it was 19.34 cm long; Kamal said 19.25 cm; and Tabish said 19.27 cm. The correct length was 19.33 cm. How much of error was made by each of the boys
Solution:
The correct measure of the length of the iron rod = 19.33 cm
The length of the rod measured by Ravi = 19.34 cm
The error made by Ravi = (19.34 - 19.33)cm = +0.01 cm
The length of the rod measured by Kamal = 19.25 cm
The error made by Kamal = (19.25 - 19.33) cm = -0.08 cm
The length of the rod measured by Tabish = 19.27 cm
The error made by Tabish = (19.27 - 19.33) cm = -0.06 cm
✦ Try This: Measurement made in science lab must be as accurate as possible. Rahul measured the length of an iron rod and said it was 20.34 cm long; Kamal said 19.35 cm; and Tabish said 19.05 cm. The correct length was 20.33 cm. How much of error was made by each of the boys
To solve the above problem you can follow the fractions and decimals rules to get the required answer.
☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 2
NCERT Exemplar Class 7 Maths Chapter 2 Exercise Problem 84
Measurements made in the science lab must be as accurate as possible. Ravi measured the length of an iron rod and said it was 19.34 cm long; Kamal said 19.25 cm; and Tabish said 19.27 cm. The correct length was 19.33 cm. How much of error was made by each of the boys
Summary:
The error made by Ravi = (19.34 - 19.33)cm = +0.01 cm
The error made by Kamal = (19.25 - 19.33) cm = -0.08 cm
The error made by Tabish = (19.27 - 19.33) cm = -0.06 cm
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