Chor Teng's answer to LockB's Secondary 3 E Maths Singapore question.
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Find 3 lightyears in km.
(9.5 x 10^12 x 3)km = 2.85 x 10^13km
Since 1 AU= 1.5 x10^8km,
Divide 2.85 x 10^13 km by 1.5 x 10^8 km.
The answer is 1.9 x 10^5 AU.
(9.5 x 10^12 x 3)km = 2.85 x 10^13km
Since 1 AU= 1.5 x10^8km,
Divide 2.85 x 10^13 km by 1.5 x 10^8 km.
The answer is 1.9 x 10^5 AU.
Date Posted:
4 years ago
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