Question

Va rog urgent. Dau coroana!

Answer 1

Răspuns:

a) BD = CD√2 => BD = 4√2 m

CD = BD/2 = 4√2m/2 = 2√2 m

VO = √(VD² - OD²)

= √(41/2 - 8)

= √(41 - 16)/2

= √25/2 = 5/√2 = 5√2/2 m

b) OM = BC/2 = 4m/2 = 2m

VM = √(VO² + OM²)

= √(50/4 + 4)

= √(25/2 + 4)

= √(25 + 8)/2

= √(33/2)

= √33/√2

= (√66)/2 m