obvod a obsah

obvod štvorca

1

strana a = 5 dm

o = 20 dm

2

strana a= 12 m

o = 48 m

3

obvod = 24 cm

a=?

a = 6 cm

4

a = 23 mm

o = 92 mm

5

obvod = 72 km

a= ?

a = 18 km

obsah štvorca

1

a = 3 cm

S = 9 cm²

2

a= 8 mm

 S = 64 mm²

3

a = 12 dm

S = 144 dm²

4

S = 1 m²

a= ?

a =1 m

5

S = 16 m²

a = ?

a = 4 m

obvod obdĺžnika

1

a = 4 cm

b = 6 cm

 o = 20 cm

2

a= 2 cm

b = 10 mm

o = 6 cm/60 mm

3

a= 7 dm

b = 8 dm

o = 30 dm

4

a= 12 m

b = 8 m

o = 40 m

5

a = 1 200 mm

b = 15 dm

o = 54 dm = 5400mm

obsah obdĺžnika

1

a = 5 cm

b = 4 cm

 S = 20 cm²

2

a = 12 dm

b = 4 dm

S = 48 dm²

3

a =30 cm

b = 5 dm

S = 15 dm² = 1500 cm ²

4

S = 12 cm²

 a = 4 cm

b= ?

b = 3 cm

5

S = 52 m²

b = 4 m

a= ?

a= 13 m