la base di un rettangolo misura 42 cm ed è i 7/5 dell'altezza.calcola il perimetro
The base of a rectangle measure 42 cms and it is the 7/5 of the height.it calculates the perimeter.
The base is 42 cm.
It is 7/5 of the height, so the height is less than 42 cm.
By proportions, the height is 42*(5/7)=30 cm.
The perimeter, P, is therefore
P = 2(base+height)=2(42+30)=144 cm