
Calcule de arii și volum (II)
Authored by Ionut Toma
Mathematics
8th Grade
Used 3+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suma muchiilor unui tetraedru regulat este egală cu 96 cm. O muchie a tetraedrului măsoară :
16 cm
24 cm
48 cm
576 cm
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diagonala unui cub are lungimea de cm. Perimetrul bazei cubului este egal cu :
2 cm
8 cm
12 cm
4 cm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O piramidă triunghiulară regulată are o muchie laterală de 10 cm și o muchie a bazei de 12 cm. Apotema piramidei are :
64 cm2
22 cm
2 cm
8 cm
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
O piramidă patrulateră regulată are latura bazei de 4 cm și apotema de 10 cm.
aria totală a piramidei este de 96 cm2
aria laterală a piramidei este de 160 cm2
volumul piramidei este de 160 cm3
aria bazei piramidei este de 16 cm2
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Prisma patrulateră regulată are muchia bazei de 8 cm și volumul de 320 cm3
Înălțimea prismei măsoară 40 cm
Înălțimea prismei măsoară 5 cm
Înălțimea prismei măsoară 256 cm
Înălțimea prismei măsoară 2560 cm
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Un tetraedru regulat are aria laterală egală cu 30 cm2. Aria totală a tetraedrului va fi :
10 cm2
120 cm2
40 cm2
900 cm2
7.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
În imagine este o piramidă la care toate muchiile sunt confecționate din cristal. Lungimea totală a muchiilor ei este de 100 cm, iar o muchie laterală măsoară 15 cm.
o muchie a bazei are 10 cm
aria unei fețe laterale este de cm
perimetrul unei fețe laterale este egal cu 40 cm
perimetrul bazei piramidei este egal cu 40 cm
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