Question

w in so in (b) 6400000 m in scientific notation​

Answer 1

Here we have to write 6400000 m in scientific notation

How to write a number in scientific notation?

1) We have to express the number in decimal form between 1 and 10

2) We have to write the number in terms of power of 10

6400000 = 64 × 10⁵

Though we have written the number in the form of power raised to 10, but the number should be between 1 and 10

so, 64 × 10⁵ = 6.4 × 10⁶

Therefore, 6400000 = 6.4 × 10⁶