Question

solve 17,18,19 step by step

Answer 1

hey buddy here is your answer

answer for question 18--

==>Rope length = 40 m 50 cm ( convert into cm 1 m =100 cm)
Rope length in cm = 40050 cm

==>each piece length= 9/4m (2.25 m)
piece length in cm= 225 cm

===> now for knowing total number of pieces= Rope length/per piece length =
40050/225=178

so we will get total 178 pieces (answer)

question numer 19

===> Submarine goes down per min = 5m

===>after 1 hour (60 min ) it will be at = per min speed *total time
5*60=300 m deep in water (answer)

hope it helps