Explicație pas cu pas:
a:)
at =al+ab
384cm=240+ab
384-240=AB
ab=144
dar AB =l²=144=>l=v144=12
Ab =12
b:)OM=AB/2=12/o=6
Al=Pe×ap/2=4×l×ap/2=24×ap
dar al=240=>24×ap=240=>apotema=10
c:)v=1/3×ap×vo=384cm²
succes!
coroană?
