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Jlenok [28]
2 years ago
11

Milagros quiere pintar ella misma el salon de su casa. Ha estado investigando y sabe que con 1 kilo de la pintura que mas le gus

ta puede pintar una area de 8 metros al cuadrado . Calcula cuantos metros cuadrados tiene que pintar milagros y cuantos botes de pintura debe comprar si en cada bote hay 5 kilos
Mathematics
1 answer:
amid [387]2 years ago
8 0

Answer:

Milagros tiene que pintar 78m^{2}.

Milagros debe comprar 2 botes de pintura.

Step-by-step explanation:

La pregunta está incompleta. Faltan datos. Los adjunto :

'' Milagros ha ido a casa y ha medido las paredes, el techo, las puertas y las ventanas del salón. Todo tiene forma rectangular y las dimensiones son las siguientes :

<u>PAREDES</u> :

  • 2 paredes de 6 m de largo y 3 m de alto.
  • 2 paredes de 4 m de largo y 3 m de alto.

<u>TECHO</u> :

  • 6 m de largo y 4 m de ancho.

<u>PUERTA</u> :

  • 1 puerta de 2 m de alto y 1.5 m de ancho.

<u>VENTANAS</u> :

  • 2 ventanas de 1.5 m de alto y 1 m de ancho. ''

Para la primera pregunta vamos a calcular cuantos metros cuadrados tiene que pintar Milagros haciendo lo siguiente :

Vamos a calcular el área de las paredes y del techo y al resultado le vamos a restar el área de la puerta y de las ventanas (dado que consideramos que la puerta y las ventanas no las pintará).

El área de una superficie rectangular se calcula como largo por alto ⇒

Para las paredes tenemos :

2 paredes de 6 m por 3 m y 2 paredes de 4 m por 3 m ⇒

2.(6m).(3m)+2.(4m).(3m)=60m^{2}

Para el techo tenemos :

(6m).(4m)=24m^{2}

Si sumamos el área de las paredes y el techo :

60m^{2}+24m^{2}=84m^{2}

Al área calculada le restaremos el área de la puerta y de las ventanas :

84m^{2} - área de la puerta - área de las ventanas ⇒

84m^{2}-(2m).(1.5m)-(2).(1.5m).(1m)=78m^{2}

78m^{2} es el área de pintar.

Ahora bien, si con 1 kilogramo de pintura puede pintar 8m^{2} ⇒

\frac{78}{8}=9.75 kilogramos

Encontramos que Milagros necesita 9.75 kilogramos de pintura para pintar el salón de su casa.

Si en un bote de pintura hay 5 kilogramos, necesitará de 2 botes de pintura (10 kilogramos en total) para poder pintar su salón

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