Question

Reduce to centimetres
(a) 5 hectometres 7 decametres and 4 metres
(b) 9 hectometres 6 decametres and 3 metres
(c) 7 hectometres 4 decametres and 8 metres
Reduce 18 hectometres 7 decametres, 5 metres and
centimetres to mililitres ?
How many seconds are there in 6 weeks 13 days and
13 hours ?
Express 6 litres, 9 decilitres & 4 centilitres as
mililitres.
man houht 102 metres of cloth. He bought 53​

Answer 1

1 hectometer = 10000 cm

1 decameter = 1000 cm

1 metre = 100 cm

a) answer -

5 hectometers = 5 × 10000

= 50000 cm

7 decameters = 7 × 1000

= 7000 cm

4 metres = 4 × 100

= 400 cm

b) answer -

9 hectometers = 9 × 10000

= 90000 cm

6 decameters = 6 × 1000

= 6000 cm

3 metres = 3 × 100

= 300 cm

c) answer -

7 hectometers = 7 × 10000

= 70000 cm

4 decameters = 4 × 1000

= 4000 cm

8 metres = 8 × 100

= 800 cm

Reduce

18 hectometers = 18 × 10000

= 180000 cm

7 decameters = 7 × 1000

= 7000 cm

5 metres = 5 × 100

= 500 cm

How many seconds are there in 6 weeks 13 days and 13 hours ?

answer - 1 week = 7 days.

Therefore 6 week = 6 × 7 = 42 days.

1 day = 24 hours

Therefore 42 + 13 days = 55 × 24 = 1320 hours

1 hour = 60 minutes

Therefore 1320 hours = 79200 minutes

1 minute = 60 seconds

THEREFORE 79200 minutes = 4752000 seconds

1 mililitre = 1000 litres, 100 deciletres, 10 centiliters.

Therefore, 6 litres = 6 × 1000 = 6000 mililitres

9 deciletres = 9 × 100 = 900 mililitres

4 centiliters = 4 × 10 = 40 mililters

Hope is helps.

Mark me as brainliest :-)