1.

The height of the building is 50ft. The same in millimetre is

Answer»

`560mm`
`285mm`
`1786.8mm`
`15240 MM`

SOLUTION :(d) `n_(1)u_(1)=n_(2)u_(2)`
`:. n_(2)=(n_(1)u_(1))/(u_(2))implies(50 ft)/(mm) =(50xx12xx2.54cm)/(0.1cm)=15240mm`
`:. 50ft=15240mm`


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