How do i convert 36 cm/ second to mph

So
36 cm
convert each to each ohter

second to hour
60 second in minute
60 minute in 1 hour
60 times 60 second in 1 hour=3600 second in 1 hour
36cm/1sec
first try to convert the bottom number to hours by multiplying the whole thing by 3600/3600
12960000cm/1hour
convert cm to miles
1 mile =5280 feet
1 foot=12 inches
1 inch=2.54 cm
1 mile=5280 times 12 times 2.54 cm=160934.4cm in one mile
see how many miles there are in 12960000 cm so divide
12960000/160934.4=80.5297 miles
round to hundreths place
80.53 miles

80.53 miles per hour

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°

The answer is that the rate of change is $50 per 1 monthhope this ; )