Question

calculati aria dreptunghiului cu latrile
a) 4,4cm si 1,2cm

b) 4√7 si 2√7cm

c)(2√31+√29cm) si (2√31-√29 cm

Answer 1

A=L*l a) A=4,4cm*1,2cm=5,28 cm² b)A=4√7*2√7=8*7=56cm² c)A=(2√31+√29)(2√31-√29)=4*31―29=124―29=95cm²

Answer 2

A=L*l a) A=4,4cm*1,2cm=5,28 cm² b)A=4√7*2√7=8*7=56cm² c)A=(2√31+√29)(2√31-√29)=4*31―29=124―29=95cm²