p- orbitals are directional means that they are oriented in space along particular axis namely , x, y , z axis , the bonding  between metal atoms on account of the force of attraction between free metal ions  and mobile ( frree) electrons is called  metalli bonding. i don't think that they are related to covalent bond in any way

 

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cheers

P   T

therefore as T increase  P increases  ,

 

now  boiling point  P  so as the  pressure  increases boiling point also increases  thus no chance of boiling  but as the pressure increases the  substances becomes change state in following order

 

gas  ----  to  ------ liquid  ------- to solid

so the person dies  vecause of freezing 

another method  let AB = x + y - 4 =0

                             BC  =  3x + y - 4 = 0

                             CA  =  x+ 3y -4 = 0

now solve for A , B , C  and then use distance formula to get  lenght of AB , BC , CA

 i now it is longer method than the one given above but u should explore different methods so that u can develop your skills

in the first case V1/V2  = 4

therefore V1  = 4 V2

in the second case  V1/ V2 = 3

therefore V1 = 3V2

using v1/t1  = v2 /t2

here v1 = 4V1,  v2 = 3V2, t1 = 300

substituting the values we get t2 = 225

i know that ans is not matching , if any mistake in my soln then tell me, books ans are not always correct