Question

3.Radius of the Earth is 6400km and that of Mars is 4300000m. Whose radius is
bigger and by how much?​

Answer 1

Step-by-step explanation:

Radius

6400km=6400×1000

=6400000m

Radius of Mars =4300000m

So, Radius of Earth is 2100000m Greater than that of Mars......

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Answer 2

Solution

Given :

1. Radius of the Earth

 = 6400 Km. We have

 to change Kilometer into

 meter. 1 km = 1000 m

Therefore 6400 km

 = 6400 × 1000

 = 6400000 m

2. Radius of Mars

  = 4300000 m

====================

To find :

Whose radius is

bigger and by how much?​

====================

Here,

6400000 > 4300000

∴ Earth radius is more than

 Mars radius

====================

Now we are going to

find how much Earth

radius is bigger than

Mars radius.

====================

So,

Here we have to subtract Earth radius

 From Mars radius.

Earth radius = 6400000 m

Mars radius =  = 4300000 m

⇒ Earth radius - Mars radius

= 6400000 - 4300000

= 2100000 m

====================

So,

  Earth radius is bigger than

  Mars by 2100000 m.