Question

1. Number please any one

Answer 1

hi!

1.(a) 1mm to 1m

as we know,

       1m = 100cm              ............(i)

and 1cm = 10mm

therefore,

        100cm = 10 x 100mm

i.e.     100cm = 1000mm             ............(ii)

thus, from (i) & (ii)

         1m = 1000mm

 hope it helps...........pl mark the brainliest!

Answer 2

(a) 1 m = 100cm

1cm = 10mm

1m = 100*10mm = 1000mm

10m = 1000*10 = 10000mm

10m = 10000mm

Hence ratio of 1mm to 10m is 1:10000

(b) 1 hour = 60min

1min = 60sec

1hour = 60*60 = 3600 seconds

1.2 hours = 4320seconds

Hence ratio of 1.2hours to 72seconds is 4320:72

which is 60:1