
Àrees de polígons
Authored by Neus Campán
Mathematics
7th - 9th Grade
Used 119+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
L'àrea del polígon regular es calcula amb la fórmula ...
A=b·a
La fòrmula és una altra.
Answer explanation
Recorda que l'apotema és la distància que va del centre del polígon regular a la meitat de qualsevol dels seus costats.
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
L'àrea és...
A=b2
A=b·a
La fórmula és una altra.
A=a·b
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
L'àrea del quadat és costat per costat.
Sí
No
Answer explanation
En el quadrat podem utilitzar dues fórmules que són equivalents:
A= C·C=C2
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
L'àrea del rombe és...
La fórmula és una altra.
A=b·a
Answer explanation
Recorda que les diagonals d'un rombre tallen de forma perpendicular per la meitat.
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
L'Àrea és...
A=B·b
La fórmula és una altra.
Answer explanation
Recorda que hi ha molts tipus de trapezis. El de la fotografia és un trapezi isòceles, però també poden ser ecalens o rectes.
6.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
L'àrea és...
A=2·pi·r
A=pi·r2
La fórmula és una altra.
Answer explanation
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
L'àrea del paral·lelogram és igual que la del rectangle.
Cert
Fals
Answer explanation
L'àrea del paral·lelogram o romboide també es calcula multiplicant la base per l'altura.
Revisa l'explicació de com es dedueix aquesta fòrmula.
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