Vypočítajte obvod kosodĺžnika ak a = 7,3 cm, b = 3 cm, va = 4 cm, vb = 6 cm.

Obsah a obvod štvoruhlníkov

Quiz
•
Mathematics
•
8th Grade
•
Hard
jana papcova
Used 4+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
20,3 cm
14 cm
26,6 cm
20,6 cm
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Aký je obvod kosodĺžnika so stranami a= 55 m, b = 24 m, výška na stranu a je dlhá 12 m, výška na stranu b má 33m ?
158 m2
124 m2
158 m
124 m
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Aký obsah má pravouhlý lichobežník so základňami 9 dm a 3 dm, kolmé rameno má 3,75 dm, druhé rameno 6,9 dm?
22,5 dm2
22,65 dm2
22,5 dm
22,65 dm2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Koľko m pletiva treba na oplotenie pozemku tvaru lichobežníka so stranami dlhými 99 m, 45 m, 52,5 m, 51m, ak kovaná brána na vchod na pozemok je 6 m široká?
253,5 m
241,5 m
247,5 m
241,5 m2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Akú výšku má lichobežník s obsahom 45 cm2 ? Jeho základne sú 3 cm a 7 cm.
22,5 cm
4,5 cm
9 cm
16,8 cm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Obsah rovnostranného trojuholníka s dĺžkami strán 10 cm a výškou 8,7 cm je :
43,5 cm2
87 cm2
30 cm2
18,7 cm2
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