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%.
-30.6122%
87.5 is less so it must be a decrease!
49 square centimetres.
Area = 49 cm2 so side = sqrt(49) cm = 7 cm and therefore, perimeter = 4*side = 28 cm.
It is: 4*7 = 28 cm
-30.6122%
87.5 is less so it must be a decrease!
49 cm2
49 cm2
49 cm2
28 cm
28 cm
49 square centimetres.
Area = 49 cm2 so side = sqrt(49) cm = 7 cm and therefore, perimeter = 4*side = 28 cm.
If it has a 28 cm perimeter, its sides are length 28/4 = 7. So, the area would be 7 x 7 = 49 cm2.
Area = 49 cm2 => length of side = 7 cmThen perimeter = 4*7 = 28 cm.Area = 49 cm2 => length of side = 7 cmThen perimeter = 4*7 = 28 cm.Area = 49 cm2 => length of side = 7 cmThen perimeter = 4*7 = 28 cm.Area = 49 cm2 => length of side = 7 cmThen perimeter = 4*7 = 28 cm.
It is: 4*7 = 28 cm