Tehtävä 243

a)
$\frac{201{,}06cm^2}{1256.64cm^2}=0{,}1599..\approx16\%$
b)

$1256{,}64-804{,}25=452{,}39$

$\frac{452{,}39}{1256{,}64}=0{,}359...\approx36\%$

c)
$\frac{351{,}86}{1256{,}64}=0{,}2800..\approx28\%$