Question

Ayudenme plisss no le entiendo ​

Answer 1

Respuesta:

Explicación paso a paso:

a)

1: Cubo

2: $A_{B} =l^{2}$ ---> A=(7 cm)^2= 49 cm^2

3: $A_{L} =l^{2}$ ---> A=(7 cm)^2= 49 cm^2

4: $A_{T} =(2*A_{B} )+(4*A_{L} )$ ----> A= (2*49 cm^2) + (4*49 cm^2) = 98 cm^2 + 196 cm^2 = 294 cm^2

5: h = 7 cm

6: aristas totales = 12

7: vértices totales = 8

8: 12(7 cm) = 84 cm

B)

1: Prisma cuadrangular

2: $A_{B} =l^{2}$ ---> A=(12 cm)^2= 144 cm^2

3: $A_{L} =b*h$ ----> A=(12 cm)(40 cm)=480 cm^2

4: $A_{T} =(2*A_{B} )+(4*A_{L} )$ ----> A= (2*144 cm^2) + (4*480 cm^2) = 288 cm^2 + 1920 cm^2 = 2208 cm^2

5: h = 40 cm

6: aristas totales = 12

7: vértices totales = 8

8: 8(12 cm) + 4(40 cm) = 96 cm + 160 cm = 256 cm

C)

1: Prisma rectangular

2: $A_{B} =l_{b}*l_{h}$ ---> A=(8 cm)(4 cm) = 32 cm^2

3:

$A_{L1} =l_{b} *h$ ----> A=(8 cm)(15 cm)=120 cm^2

$A_{L2} =l_{h} *h$ ----> A=(4 cm)(15 cm)=60 cm^2

$A_{LT} =A_{L1}+A_{L2}$ -----> 120 cm^2+60 cm^2= 180 cm^2

4: $A_{T} =(2*A_{B} )+(4*A_{LT} )$ ----> A= (2*32 cm^2) + (4*180 cm^2) = 64 cm^2 + 720 cm^2 = 784 cm^2

5: h = 15 cm

6: aristas totales = 12

7: vértices totales = 8

8: 4(4 cm) + 4(8 cm) + 4(15 cm) = 16 cm + 32 cm + 60 cm = 108 cm

Answer 2

Respuesta:

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