The percent of decrease is the amount it has decreased by. 49-28 is 21, so set up 21/49 to x/100. Cross multiply to get 2100 = 49x, then divide both sides by 49. From this you get about 42.857, so the percent of decrease is 42.857%.
87.5 is less so it must be a decrease!
49 cm = 0.49 metres
34 cm = 340 mm
34 pi cm = 106.8 cm
The percent of decrease is the amount it has decreased by. 49-28 is 21, so set up 21/49 to x/100. Cross multiply to get 2100 = 49x, then divide both sides by 49. From this you get about 42.857, so the percent of decrease is 42.857%.
87.5 is less so it must be a decrease!
it is 40% of a meter, a meter is 100 cm.
It is: 115 -34 = 81 cm
49 cm = 19.3 in
49 cm = 0.49 metres
34 cm = 340 mm
34 pi cm = 106.8 cm
34/10 = 3.4 cm
34 inches = 86.4 cm
34 cm = 0.34 m
34