Question

Zad 8 9 i 10 z zalacznika klasa 4

Answer 1

z.8 360 m : 12m=30 m

z.9 17-6 =11 11*2+17*2=56 Obw.  P=11*17=187

z.10 a tego zadania nie rozumiem :// myślę że pomogłam w tych 2 ;)

Answer 2

8

 

360m² = 12m * x
360 = 12x | :12
30 = x

 

 działka ma wymiary 30m x 12m

Obw = 2 * 12m + 2 * 30m
Obw = 24m + 60m
Obw = 84m

 

9

a)

 

1bok = 17m

2bok = 17-6=11m

 

Obw = 2 * 17m + 2 * 11m

Obw = 34m + 22m

Obw = 56m

 

b)

 

1bok = 17m

2bok = 17-6=11m

 

Pp = a * b

Pp = 17m * 11m

Pp = 187m^2

 

 

10

 

a)

 

Ps = a * b

Ps = 8m * 12m

Ps = 96m^2

 

b)

 

Pf = a * b

Pf = 4m * 4m

Pf = 16m^2