4-misol
Trapetsiya a = 70 m
b = 30 + 70 + 60 = 160 m
h = 40 m
S = ( a + b ) : 2 • h
S = (70+160):2•40=
1) 70+160=230 m
2) 230:2=115 m
3) 115•40=4600 m2
5-masala
Sharti:
Filcha - 120 kg
Fil - 4500kg
Filcha necha marta yengil?
4500:120=37 (60 q)
Trapetsiya a = 70 m
b = 30 + 70 + 60 = 160 m
h = 40 m
S = ( a + b ) : 2 • h
S = (70+160):2•40=
1) 70+160=230 m
2) 230:2=115 m
3) 115•40=4600 m2
5-masala
Sharti:
Filcha - 120 kg
Fil - 4500kg
Filcha necha marta yengil?
4500:120=37 (60 q)