Question

The surface area of Earth is approximately 5.1 x 108 km2. The surface area of Jupiter is approximately 6.2 x 1010 km2. Approximately

how many times larger is Jupiter's surface area than Earth's surface area?
A 8
B 12
C 80
D 120

Answer 1

The correct answer is: Option D: 120

Explanation:

Given that

`S_E = 5.1*10^8\ km^2\\S_J = 6.2*10^(10)\ km^2`

In order to find how much larger is the area of Jupiter we will divide the surface area of Jupiter by the Surface area of Earth. First of all we will have to equate the exponents of 10 so that the cutting can be done

Now,

`= (S_J)/(S_E)\\= (6.2*10^(10))/(5.1*10^8)`

10^10 can be written as: 10^8*10^2

`=(6.2*10^2*10^8)/(5.1*10^8)\\= (6.2*100)/(5.1)\\=(620)/(5.1)\\=121.5686`

Closest to 121 is 120.

Approximately Jupiter's surface area is 120 times larger then Earth's surface area.

Hence,

The correct answer is: Option D: 120