Question

1. Write the name of the Ruler! Book! Author! monument on small strips of paper. Fold and keep it in a container.
2. Ask a child from each group to come forward, pick a chit and say a few words about the topic.

Answer 1

Explanation:

Mate , can u tell first what to do this a activity which u have do not us

hope u understand , if any doubt plz ask

Answer 2

According to Dr if air purifier clean the air at the rate = 5 cm per second how much time will it take to clean the room having 600 CM of air​

time =per second= one second  

room distance =600 cm

so= in one min = 60 seconds * 5 cm  

= 300cm/min

it mean =600cm/5cm

=120 sec  

convert in min so 120/60= 2 min

According to Dr if air purifier clean the air at the rate = 5 cm per second  it will  take 2 min or (120 seconds ) to clean the room having 600 CM of air​