Question

The radius of earth is 6347km. Its rounded
off value up to two significant figures is
1) 6400 km
2) 6.4 x 103 km
3) 6.3 x 103 km 4) 6.35 x 103 km​

Answer 1

Answer:

6400 km

Explanation:

Hope it helps you

Answer 2

Answer:1) 6400

Explanation: In this, at first we will look at the last 2 digits in 6347..i.e 47 which will be rounded off to 50. So now we get 6350 . Again when we round off 350 tp the nearest 100 3 being an odd number adds up 1 to become 4 and thus 400 which now gives us the final answer 6400km.

Hope it helps