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goldenfox [79]
3 years ago
13

The following picture is a square pyramid where DE=8 cm and m∠ADE=60°.

Mathematics
1 answer:
mr_godi [17]3 years ago
5 0

Answer:

131 cm

Step-by-step explanation:

formula for surface area of pyramid is

S = (1/3)Bh

but the base ia a square, so B = x^{2}

S = (1/3)x^{2} h

the pic shows h = 8

but we don't know x

do SohCahToa

sin60 = x/8

x = 8sin60

x = 6.92820323 or 7

plug in numbers

S = (1/3)7^{2}8

S = 392/3

S = 130.6666667 or 131 cm

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3 0
3 years ago
Provide a solution for the following equation: 3x + 2y=4
shtirl [24]

Answer:

One solution is to find x and y by doing the following:

Step-by-step explanation:

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7 0
3 years ago
timmy was asked to order nine pizzas, with the following orders: one pepperoni and one cheese how many did he order in total
Romashka [77]
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7 0
4 years ago
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Alenkinab [10]

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7 0
4 years ago
The question is on the picture
Vadim26 [7]

<em>Answer,</em>

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7 0
4 years ago
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