Oblicz obwód i pole . a ) a=2 i B=2 √2 b) a=5 i b =5√2

a ) a=2 i B=2 √2 Obw = 2*2j + 2*2√2j = 4( 1 + √2)j P = 2j * 2√2j = 4√2j² b) a=5 i b =5√2 Obw = 2*5j + 2*5√2j = 10 (1 + √2)j P = 5j * 5√2j = 25√2j²