Question 115(vii)

Express the following in standard form:
Express 2 yr in seconds.

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Solution

$2 y e a r s = 2 \times 365 d a y s [1 y e a r = 365 d a y s] = 2 \times 365 \times 2 h [1 d a y = 24 h o u r s] = 2 \times 365 \times 24 \times 60 m i n [1 h o u r = 60 m i n u t e s] = 2 \times 365 \times 24 \times 60 \times 60 s [1 m i n u t e = 60 s e c o n d s] = 63072000 s$

Standard form :
$63072000 = 6.3072 \times 10^{7} s$

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