2)
a) V=(2,8m)^2*5,9m=46,26m^3
b) a=√(V/h) a=(241dm^3)/14,2dm=4,12dm
c) h=V/(a^2) h=(102cm^3)/(6,1cm)^2=2,74cm
3)
a)
V=6,5dm*11dm*4,2dm=300,3dm^3
O=2*(6,5dm*11dm+6,5dm*4,2dm+11dm*4,2dm)=290dm^2
b)
h=(280,8cm^3)/(3cm*10,4cm)=9cm
O=2*(9cm*3cm+9cm*10,4cm+3cm*10,4cm)=303,6cm^2
c)
a=(440,2m^2)/(5m*7,1m)=12,4m
O=2*(5m*7,1m+5m*12,4m+12,4m*7,1m)=10987,96m^2
Smitty