Mathematics: Asquare pyramid has a base area of 25 ft2. the pyramid’s total surface area is 105 ft2. what is the area of each triangular face?

Asquare pyramid has a base area of 25 ft2. the pyramid’s

Ответ:

giannimaraj711

03.01.2022

$Area\ of\ pyramide=area\ of\ square+4\cdot\ area\ of\ triangulars\\\\A_p=a^2+4\cdot\frac{ah}{2}\\\\a^2=25\\a=5\\\\105=25+4\cdot\frac{5h}{2}\\105-25=2\cdot5h\\80=10h\ \ \ \ |:10\\h=8\\\\A_t=\frac{5\cdot8}{2}=\frac{40}{2}=20\ ft^2\\\\Each\ triangular\ has\ 20\ ft^2$

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Ответ:

malachijwilson5

17.11.2022

Mathematics

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Asquare pyramid has a base area of 25 ft2. the pyramid’s total surface area is 105 ft2.
what is the area of each triangular face?

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