a) 4,5^2 + 6^2 = x^2
20,25 + 36 = x^2
√56,25 = x
7,5 = x (ramie)
4,5 × 2 = 9
Ob = 7,5 + 7,5 + 9 = 24
P = 9 × 6 / 2 = 27
b) 5^2 + y^2 = 13^2
25 + y^2 = 169
y^2 = 169 - 25
y = √144
y = 12 (połowa podstawy)
12 × 2 = 24 (podstawa)
Ob = 24 + 13 + 13 = 50
P = 24 × 5 / 2 = 60
c) 2^2 + h^2 = (2√10)^2
4 + h^2 = 4 × 10
4 + h^2 = 40
h^2 = 40 - 4
h = √36
h = 6
Ob = 2√10 + 2√10 + 4 = 4√10 + 4
P = 4 × 6 / 2 = 12
DASZ NAJ?