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prisoha [69]
3 years ago
6

1) El largo de un rectángulo mide el triple que su ancho. Si el ancho mide 12 cm, el perímetro del rectángulo es: Selecciona la

opción correspondiente: a) 86 cm b) 90 cm c) 96 cm d) 102 cm 2) ¿Cuál es el perímetro de un heptágono regular de 2,45 m de lado? Selecciona la opción correspondiente: a) 14,7 m b) 12,25 m c) 17,15 m d) 20 m 3) Si una cancha de fútbol mide 98 m de largo y su ancho equivale a la mitad de esta medida, su perímetro es: Selecciona la opción correspondiente: a) 304 m b) 284 m c) 294 m d) 354 m 4) Frente a la casa de Carolina hay un parque que tiene 45 m de largo y 38 000 mm de ancho. Si ella da dos vueltas alrededor de este, ¿qué distancia en metros recorre? Selecciona la opción correspondiente: a) 160 metros b) 330 metros c) 166 metros d) 332 metros
Mathematics
1 answer:
Wittaler [7]3 years ago
4 0

Answer:

1) c) 96 cm

2) c) 17,15 m

3) c) 294 m

4) d) 332 metros

Step-by-step explanation:

1)

La fórmula para el perímetro de un rectángulo = 2L + 2W

= 2 (largo + ancho)

L = longitud

W = ancho

Se nos dice en la pregunta que:

La longitud de un rectángulo es tres veces su ancho. Si el ancho es de 12 cm

Por lo tanto,

L = 3 W

L = 3 × 12

Largo = 36cm

Por lo tanto, el perímetro =

2 (largo + ancho) cm

= 2 (36 + 12) cm

= 2 (48) cm

= 96 cm

2)

La fórmula para el perímetro de un heptágono regular = 7a

Donde a = longitud de un lado

De la pregunta,

a = 2,45 m laterales

Por lo tanto, el perímetro de un Heptágono regular = 7 (2,45 m)

= 17,15 m

3)

La fórmula para el perímetro de un rectángulo = 2L + 2W

= 2 (largo + ancho)

L = longitud

W = ancho

Se nos dice en la pregunta que:

Si un campo de fútbol tiene 98 m de largo y su ancho es igual a la mitad de esta medida,

Por lo tanto,

L = 98 m

W = 1/2 de longitud

Ancho = 1/2 (98)

= 49

Por lo tanto, el perímetro =

2 (largo + ancho) m

= 2 (98 + 49) m

= 2 (147) m

= 294 m

4)

El parque es de forma rectangular.

Longitud = 45 m

Ancho = 38.000 mm

Convertir mm en m

1 milímetro = 0,001 metro

38.000 milímetro =

38.000 × 0,001 metros

= 38 metros (38 m)

La distancia alrededor del parque = perímetro del parque

Perímetro = 2 (L + W)

= 2 (45 + 38)

= 2 (83)

= 166 m

Distancia alrededor del parque una vez = 166 m

Pero nos dijeron que dio la vuelta al parque 2 veces, por lo tanto, la distancia que recorrió = 166 m × 2

= 332m

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