Question

4. The distance light travels in one year is approximately 5,870,000,000,000 miles. The distance light travels in 100 years is: (a) 587 × 10^8 miles,

(b) 587 × 10^10 miles,
(c) 587 × 10^-10 miles,
(d) 587 × 10^12 miles,
(e) 587 × 10^-12 miles​

Answer 1

given;

5,870,000,000,000 miles.

to find:

The distance light travels in 100 years.

solution:

The distance of the light travels in 100 years is:

5,870,000,000,000 × 100 miles.

= 587,000,000,000,000 miles

= 587 × 10^12 miles.

answer= option d

Answer 2

Given:

`1 \: year = 5870000000000 \: miles`

To find:

The distance which light can travel in 100 years.

Solution:

to find the distance which light can travel in 100 years, multiply the distance which light can travel in 1 year (5,870,000,000,000 miles) by 100.

`= 5870000000000 * 100`

`= 587000000000000 \: miles`

`= 587 * {10}^(12)`

Hence, the correct answer is option D