Question

The diameter of the earth is 13000km.Exprees it in scientific notation​

Answer 1

Answer:

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The answer is 1.3 × 10^7

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Step-by-step explanation:

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$diameter \: of \: earth = 13000 \: km \\ \\ = 13000 \times 1000 \\ \\ = 13000000 \: m \\ \\ = 13 \times 1000000 \\ \\ = 13 \times {(10)}^{6} \\ \\ = \frac{13}{10} \times {(10)}^{6} \times 10 \\ \\ diameter \: of \: earth = 1.3 \times {(10)}^{7} \\ \\ this \: is \: ur \: required \: answer \: :):):):):)$

Answer 2

Answer:

1.3× 10^4 km or

1.3× 10^7m

Step-by-step explanation:

General form of scientific notation is A×10^n,where 1≤ A<10 and n is positive or negative integer.

n is positive for a number >10 , n is negative for a number <1.

The diameter of the earth is 13000km.

13000km = 1.3× 10^4 km or 1.3× 10^4×10^3m

= 1.3× 10^4km or 1.3× 10^7m