Question

I
Express the following in (a) centimetres and (b) millimetres.
(1) 2 km (ii) 1 km 9 hectometre ( 125 decametre
(iv) 120 km
(U) 3000 decametre.
Ibbottle Co​

Answer 1

Answer:

2 km=2000m=200000 cm=2×10^6 mm

1km = 100000 cm= 1×10^6 mm

9 hectometers= 9×125 decameter =9×125/10 meter

=9×125/10 × 10^2 cm= 9×125/10 × 10^3 mm

1 decameter = 10 cm

1 km= 100000 cm= 10^6 mm

use this for rest

only then you will remember and learn