
Repaso Área en Cuerpos Geométricos
Presentation
•
Mathematics
•
1st Grade
•
Hard
PIA VALDES
Used 8+ times
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17 Slides • 8 Questions
1
Repaso Área en Cuerpos Geométricos
Calcular área de cubos y paralelepípedos
2
Área de Cuerpos Geométricos
Cuando hablamos del área nos referimos a la superficie de sus caras.
Cubos y paralelepípedos están compuestas por 6 caras.
3
4
PASOS SEGÚN EL CUERPO GEOMÉTRICO
Calculo de área total.
5
Ejemplo Cubo
Debemos calcular el área de una cara
A = 2 x 2
A = 4 cm2
Multiplicamos esa área por 6
4 X 6 = 24 cm2
6
Ejemplo Paralelepípedo
Consideramos 3 áreas de
A lateral = 1 x 1 = 1 + 1 = 2
A frontal =1 x 4 = 4 + 4 = 8
A superior = 1 x 4 = 4 +4 = 8
At = 2 + 8 + 8 = 18 cm2
7
PREPARADOS
Halla el área total de los siguientes prismas.
¡A practicar!
8
Multiple Choice
18 cm2
20 cm2
25 cm2
35 cm2
9
Área total
Al = 1 x 1 = 1 + 1 = 2
Af = 4 x 1 = 4 + 4 = 8
As = 1 x 4 = 4 +4 = 8
At = 8 + 8 + 2 = 18 cm2
El área total del prisma es 18 cm2
10
Multiple Choice
48 cm2
46 cm2
50 cm2
28 cm2
11
Área Total
Al = 2 x 2 = 4 + 4 = 8
Af = 2 x 5 = 10 + 10 = 20
As = 5 x 2 = 10 + 10 = 20
At = 8 +20 + 20 = 48 cm2
El área total de prisma es 48 cm2
12
Multiple Choice
18 cm2
48 cm2
66 cm2
42 cm2
13
Área Total
Al = 3 x 3 = 9 + 9 = 18
Af = 4 x 3 = 12 + 12 = 24
As = 3 x 4 = 12 + 12 = 24
At = 18 + 24 +24 = 66
El área total de prisma es 66 cm2
14
Multiple Choice
84 cm2
60 cm2
100 cm2
102 cm2
15
Área Total
Al = 3 x 3 = 9 + 9 = 18
Af = 7 x 3 = 21 + 21 = 42
As = 3 x 7 = 21 + 21 = 42
At = 18 + 42 +42 = 102
El área total del prisma es de 102 cm2
16
Multiple Choice
56 cm2
84 cm2
48 cm2
188 cm2
17
Área Total
Al = 4 x 7 = 28 + 28 = 56
Af = 6 x 7 = 42 + 42 = 84
As = 4 x 6 = 24 + 24 = 48
At = 56 + 84 + 48 = 188
E área total del prisma es de 188 cm2
18
Multiple Choice
60 cm2
100 cm2
280 cm2
120 cm2
19
Área Total
Al = 5 x 6 = 30 + 30 = 60
Af = 10 x 5 = 50 + 50 = 100
As = 6 x 10 = 60 + 60 = 120
At = 60 + 100 + 120 = 280
El área del prisma es de 280 cm2
20
Multiple Choice
45 cm2
36 cm2
9 cm2
54 cm2
21
Área Total
Af = 3 x 3 = 9
At = 9 x 6 = 54
El área total del cubo es 54 cm2
22
ATENTOS
Resolvamos el siguiente problema.
23
Multiple Choice
Se quiere envolver esta caja para un regalo.
¿Cuánto papel se necesita para cubrir toda la superficie?
20 cm2
76 cm2
40 cm2
56 cm2
24
Área Paralelepípedo
Al = 4 x 2 = 8 + 8 = 16
Af = 5 x 2 = 10 + 10 = 20
As = 5 x 4 = 20 + 20 = 40
At = 16 + 20 +40 = 76 cm2
Se necesita 76 cm2 de papel para cubrir toda la superficie total de la caja.
25
Repaso Área en Cuerpos Geométricos
Calcular área de cubos y paralelepípedos
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