Question

Va rog sa ma ajutati!!!! Va roogggg!!!

Answer 1

Explicație pas cu pas:

b)Aria cerc = pi•R^2=4•3,1415=12,566 m^2 > 12 m^2

a)AM=2R=4 m =>Aria AMNP=16 m^2

MB=16-4=12 m =>Aria NMB=(4•12)/2=24 m^2=Aria NPD

Aria ABCD=256 m^2

=>Aria DNBC=256-2•24-16=194 m^2

c)DN=NB (tr.NMB=tr.NPD caz L.U.L.)

DN^2=PD^2+PN^2 (T.Pit.)

DN^2=144+16=160 =>DN=NB=4rad10

DN+NB=8rad10=25,3 m < 26 m