Question

In Hindu chronology, the longest time measure is a para. One para equals 311 040 000 000 000 years. Calculate this value in megayears, hours and in seconds. Write your answers in scientific notation. ​

Answer 1

A para equals $3.110\times 10^{8}$ megayears, $2.725\times 10^{18}$ hours and $9.809\times 10^{21}$ seconds, respectively.

This is an unit conversion problem, in this question we need to convert a value in Hindu units into SI units. A megayear equals $10^{6}$ years, a year equals  8760 hours and a hour equals 3600 seconds. Now we proceed to perform all required conversions:

Megayears

$x = 1\,para \times \frac{311040000000000\,yr}{1\,para} \times \frac{1\,Myr}{10^{6}\,yr}$

$x = 311040000\,Myr$

$x = 3.110\times 10^{8}\,Myr$

Hours

$x = 1\,para \times \frac{311040000000000\,yr}{1\,para} \times \frac{8760\,h}{1\,yr}$

$x = 2.725\times 10^{18}\,h$

Seconds

$x = 1\,para \times \frac{311040000000000\,yr}{1\,para} \times \frac{8760\,h}{1\,yr} \times \frac{3600\,s}{1\,h}$

$x = 9.809\times 10^{21}\,s$

A para equals $3.110\times 10^{8}$ megayears, $2.725\times 10^{18}$ hours and $9.809\times 10^{21}$ seconds, respectively.

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