
Cálculo de Áreas em Figuras Planas
Authored by SILVANIA FIORENTIN
Mathematics
8th Grade
10 Questions
Used 4+ times

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcule a área de um triângulo com base de 8 cm e altura de 5 cm.
20 cm²
40 cm²
30 cm²
25 cm²
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um retângulo tem comprimento de 12 m e largura de 7 m. Qual é a área do retângulo?
84 m²
60 m²
90 m²
72 m²
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Se a área de um triângulo é 36 cm² e a base é 9 cm, qual é a altura do triângulo?
6 cm
8 cm
4 cm
10 cm
Answer explanation
A área do triângulo é dada por A = (base * altura) / 2. Substituindo os valores: 36 = (9 * altura) / 2. Multiplicando por 2, temos 72 = 9 * altura. Dividindo por 9, encontramos a altura = 8 cm.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um campo retangular tem uma área de 150 m² e um comprimento de 15 m. Qual é a largura do campo?
10 m
12 m
8 m
15 m
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Um retângulo tem uma área de 48 cm² e uma largura de 4 cm. Qual é o comprimento do retângulo?
10 cm
12 cm
14 cm
16 cm
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A base de um triângulo é o dobro da sua altura. Se a área do triângulo é 50 cm², qual é a altura do triângulo?
5 cm
10 cm
8 cm
12 cm
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