Question

The approximate diameters of Venus and Mars are listed below:
Venus: 1, point, 2, 1, times, 10, to the power 41.21×10
4
kilometers
Mars: 6, point, 7, 9, times, 10, cubed6.79×10
3
kilometers
How many times larger is the diameter of Venus than Mars? Write your answer in standard notation, rounding to the nearest tenth.

Answer 1

Venus = 1.21×10^4 km, Mars = 6.79×10^3 km.

Ratio = (1.21×10^4) / (6.79×10^3) = (1.21/6.79)×10 ≈ 1.782… ≈ 1.8.

So Venus's diameter is about 1.8 times Mars's (to the nearest tenth).