Question

The speed of light in a vacuum is 29,980,000,000

centimeters per second. In scientific notation, this
number is written as
A. 2.998 x 10⁹.
B. 2.998 x10¹0.
C.
29.98 x 10⁹.
D. 29.98 x10¹0.

Answer 1

B. 2.998 x 10¹⁰

Explanation:

Given :

• 29,980,000,000

Steps in solving :

1. Take the zeros after the last non-zero digit as a power of 10.
2. Take the non-zero part (in the part) and put a decimal point after between the thousands and hundreds place, and shift the remaining powers of 10 to the previously grouped part.
3. Adjust further if needed to match an answer.

Solving :

• 29,980,000,000
• 2,998 x 10⁷
• 2.998 x 10³ x 10⁷
• 2.998 x 10¹⁰

Answer 2

`\huge\boxed{\sf 2.998 * 10^(10)}`

Explanation:

Given number:

29,980,000,000

Rules:

• Move the decimal point after the first non-zero digit. (after 2)
• Here, we will move the decimal point 10 places to the left to move it after the first non-zero digit.
• Since we move the decimal point 10 places, we will write the number as a multiple of 10¹⁰ (10 being the exponent).

The number will become:

2.998 × 10¹⁰

`\rule[225]{225}{2}`