Odpowiedzi

2010-03-28T20:54:05+02:00
1. x- długość drugiej deski
2m * 36mm = x * 20mm
(2000mm* 36mm)/20mm= x
72000mm/20=x
x= 3600mm=3,6m
2. V= 1/12 π ( 2D²+d²)h
12V= π ( 2D²+d²)h
12V/π= ( 2D²+d²)h
(12V/π)/h= 2D²+d²
(√12v/√π/)√h= D√2+d
d= ((√12v/√π/) √h )/ D√2
2 5 2
2010-03-28T21:04:39+02:00
2000mm*36mm = 20mm*x
x = 36mm* 100 = 3600mm = 3,6m

V=1/12π(2D² + d²)h
12V/πh = 2D² + d²
d² = 12V/πh - 2D²
d = √(12V/πh) - D√2
2 4 2