Question

12 Why do we
need to know about the distance?​

Answer 1

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Explanation:

We need to measure distance because it is needed to calculate other things like speed, time taken in a journey and much more... It helps us to make decisions based on the outcome of distance (it's a very important thing when it comes to travel in space).

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Answer 2

Ans= ᴡᴇ ɴᴇᴇᴅ ᴛᴏ ᴍᴇᴀsᴜʀᴇ ᴅɪsᴛᴀɴᴄᴇ ʙᴇᴄᴀᴜsᴇ ɪᴛ ɪs ɴᴇᴇᴅᴇᴅ ᴛᴏ ᴄᴀʟᴄᴜʟᴀᴛᴇ ᴏᴛʜᴇʀ ᴛʜɪɴɢs ʟɪᴋᴇ sᴘᴇᴇᴅ, ᴛɪᴍᴇ ᴛᴀᴋᴇɴ ɪɴ ᴀ ᴊᴏᴜʀɴᴇʏ ᴀɴᴅ ᴍᴜᴄʜ ᴍᴏʀᴇ... ɪᴛ ʜᴇʟᴘs ᴜs ᴛᴏ ᴍᴀᴋᴇ ᴅᴇᴄɪsɪᴏɴs ʙᴀsᴇᴅ ᴏɴ ᴛʜᴇ ᴏᴜᴛᴄᴏᴍᴇ ᴏғ ᴅɪsᴛᴀɴᴄᴇ (ɪᴛ's ᴀ ᴠᴇʀʏ ɪᴍᴘᴏʀᴛᴀɴᴛ ᴛʜɪɴɢ ᴡʜᴇɴ ɪᴛ ᴄᴏᴍᴇs ᴛᴏ ᴛʀᴀᴠᴇʟ ɪɴ sᴘᴀᴄᴇ).