Question

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Q.The distance between Earth and Mars is 2.2 253 ×10⁸ km .The distance between Mars and Saturn is 1.19666 × 10⁹ km a spaceship starts from earth and flies to Saturn via mass. find the total distance covered by the spacecraft in metres?

Answer 1

The solution already provided is correct hope you don't understand the solution
let me explain the solution in detail
given that The distance between Earth and Mars is 2.2253 ×10⁸ km
=222530000 km
also given that The distance between Mars and Saturn is 1.19666 × 10⁹ km
= 1196660000 km

adding both
1 1 9 6 6 6 0 0 0 0 +
2 2 2 5 3 0 0 0 0
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1 4 1 9 1 9 0 0 0 0

therefore total=1419190000 km
since 1 kilometer = 1000 meter
we multiply the answer by 1000
therefore the required answer is 1419190000000 m
to convert it into scientific notation, simply put a point after first digit and write upto the start of continues zeros now write 10^ x where x is the total number of digits-1 = 12
therefore the scientific notation is 1.41919 * 10^12
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