First slide

Accuracy; precision of instruments and errors in measurements

Question

A stick has a length of 12.132cm and Another stick has a length of 12.4cm. If the two sticks are placed end to end what is their total length?

Moderate

A

23.5cm
B

24.5cm
C

25cm
D

24cm

Solution

Let the lengths of the sticks are $l_{1} = 12.132 c m, l_{2} = 12.4 c m$ Here has one decimal place and $l_{1}$ has to be rounded off to have only two decimal places.
$l_{1} + l_{2} = 12.13 + 12.4 = 24.53$
This is to be rounded off to have one decimal place only.
The total length is 24.5cm

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App