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Converting Gigametres to Light Years
The distance from Cygni A to the Earth is 1.1 × 10⁸ gigametres.
Which distance is the same as 1.1 × 10⁸ gigametres? Tick one box.
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Marking points
- 1 Selects 1.1 × 10¹⁷ m.
Why this answer loses marks
Treats giga as a million.
Giga represents a factor of ten to the ninth, so using the mega prefix gives the wrong exponent shift.