English, 13.05.2021 21:10 patrickfryer240

David ha fabricado una caja de cartón sin tapa para guardar sus cromos la caja tiene una base cuyos lados miden 30 cm y cuya altura mide 10 cm calcula la cantidad de cartón que ha necesitado David

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Answer from: salvadorjazmin75

Se requieren 210 cm de cartón con un lado = 10 cm

Se requieren 70 cm de cartón con un lado = 30 cm

Explanation:

Spanish

Primero calcularemos el área de la superficie de la caja sin la tapa.

Los lados son de 30 cm, por lo que largo = ancho = 30 cm y alto = 10 cm

Superficie del fondo = largo * ancho = 30 * 30 = 900 cm²

Área de superficie de la parte delantera y trasera = 2 * alto * ancho = 2 * 10 * 30 = 600 cm²

Área de superficie del lado izquierdo y derecho = 2 * largo * alto = 2 * 30 * 10 = 600cm²

Superficie total = 900 + 600 + 600 = 2100 cm²

Entonces, si dividimos la superficie total por un lado (altura) = 2100cm² / 10cm = se requieren 210 cm de cartón

Se requieren 210 cm de cartón con un lado = 10 cm

o si dividimos la superficie total por un lado (largo) = 2100cm² / 30cm = se requieren 70 cm de cartón

Se requieren 70 cm de cartón con un lado = 30 cm

English

First we will calculate the surface area of the box without the lid.

The sides are 30 cm so length=width= 30 cm and height = 10cm

Surface area of the bottom = length *width = 30*30= 900 cm²

Surface area of front and back = 2*height * width = 2*10*30= 600 cm²

Surface area of left and right side = 2*length*height = 2*30*10= 600cm²

Total surface area= 900+600+600= 2100 cm²

So if we divide the total surface area by one side ( height ) = 2100cm²/ 10cm= 210 cm of card board is required

210 cm of card board is required with one side = 10 cm

or if we divide the total surface area by one side ( length ) = 2100cm²/ 30cm= 70 cm of card board is required

70 cm of card board is required with one side = 30 cm

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