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aleksklad [387]
2 years ago
5

Find the total surface area of the following square pyramid: 9 cm 10 cm SA = [?]cm2

Mathematics
1 answer:
MakcuM [25]2 years ago
4 0

Answer:

280 cm2

Step-by-step explanation:

1)find the area of square

A=LW

=10×10

=100

2) find the area of triangle

A=B×H÷2

=10×9/2

=45

Coz,there are 4 triangle we multiple by 4

=45×4

=180

3)find the total surface area by adding the two

=100+180

=280cm2

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Answer:

The equation of line passing through point (2 , 2) and perpendicular to line y = x is  y = - x + 4   .

Step-by-step explanation:

Given as :

The line equation is y = x

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Comparing given line equation with standard line equation

The slope of line y = x is m = 1

Again

Other line is passing through point (2 ,2) and is perpendicular to line y = x

Let The slope of other line = M

∵ From perpendicular lines property

Product of slope of lines = - 1

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Or , M = \dfrac{ - 1}{m}

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The other line is passing through point (2 , 2) and slope M = - 1

So, y - y_1 = M × (x - x_1)

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3 years ago
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Sergio [31]

Answer:

Step-by-step explanation:

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Then, just add across the numerator to get 34/100, which can be simplified to 17/50

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