18) Respuesta: b)
hallando el area total
A total=A lateral +2A base
Donde:
A lateral= 2πrh =2π10x10
A base =π r^{2}=π 100
A total= 200π+ 2x(100π) =400π
19)
grados a radianes
400° ⇒20π/9
95° ⇒ 19π/36
-240° ⇒-4π/3
-160° ⇒-8π/9
radianes a grado
π ⇒ 180°
0.8 rad × 180/π = 45.837°
-7π/9 ⇒ -140°
-9π/4 ⇒ -405°
5π/6 ⇒ 150°
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18) Respuesta: b)
hallando el area total
A total=A lateral +2A base
Donde:
A lateral= 2πrh =2π10x10
A base =π r^{2}=π 100
A total= 200π+ 2x(100π) =400π
19)
grados a radianes
400° ⇒20π/9
95° ⇒ 19π/36
-240° ⇒-4π/3
-160° ⇒-8π/9
radianes a grado
π ⇒ 180°
0.8 rad × 180/π = 45.837°
-7π/9 ⇒ -140°
-9π/4 ⇒ -405°
5π/6 ⇒ 150°