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Lana71 [14]
3 years ago
8

Consider the pyramid below: 12 cm 15 cm What is the length of a ?

Mathematics
1 answer:
DedPeter [7]3 years ago
5 0
[surface area of the square pyramid]=area of the base+4*[area of one lateral triangle]

area of the base=12²----> 144 cm²

area of one lateral triangle=b*h/2
b=12 cm
h=slant height -----> 15 cm
area of one lateral triangle=12*15/2-----> 90 cm²

[surface area of the square pyramid]=144+4*[90]----> 504 cm²

the answer is
the surface area of the square pyramid is 504 cm²
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Lo primero que debemos saber, es que la gráfica de pastel nos permite dividir a una población, la cual sería el 100%, en porcentajes menores que representan algo.

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Bueno, como sabemos el gráfico (el cual es un círculo) representa el 100%.

Y en un círculo, tenemos un ángulo de 360°

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360° = 100%

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Si tomamos el cociente entre las ecuaciones:

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obtenemos:

x/360° = 50%/100%

resolviendo para x, obtenemos:

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Para los otros porcentajes hacemos lo mismo.

Para el de 20% tenemos:

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Finalmente, para el de 10% tendremos:

z = 10%

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8 0
3 years ago
Help ASAP! thanks so much!
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I believe it is 1500
(1920 - 420)
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