A) \[1m\text{ }12cm\]
B) \[1m\text{ }12.1\text{ }cm\]
C) \[1m\,21.1cm\]
D) \[1m\,\,21cm\]
Correct Answer: B
Solution :
Average height \[=\frac{6\times \left( 1.15 \right)+8\times \left( 1.10 \right)+6\left( 1.12 \right)}{20}\] \[\Rightarrow \] \[\frac{22.42}{20}=1.121\] or \[1\,m\,\,\,12.1\,cm\]You need to login to perform this action.
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