find the length of diagonal of quadrilateral whose area is 195 square metre and length of the perpendicular to the diagonal from vertex are 9 m and 10.5 m respectively​

homozygous. one is homozygous, while two is heterozygous.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m