" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
d = 8
cos α=√15/4
Obw = ?
Obw = 2(a + b)
b/d = cos α / *d
b = d*cos α
b = 8*√15/4
b = =2√15
a² + b² = d²
a² = d² - b²
a² = 8² - (2√15)²
a² = 64 - 60
a² = 4
a = √4
a = 2
Obw = 2(2+ 2√15)
Obw = 4(1+ √15)
Odp: Obwód prostokąta wynosi 4(1+ √15).