3 years ago

Yo please help meee with this question

Mathematics

1 answer:

nordsb [41]3 years ago

6 0

Answer:

Step-by-step explanation:

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How much material will Dmitri's mom need for the tent, including the floor?

suter [353]

<h3>Answer: 21.4 square meters</h3>

Work Shown:

A = area of the front triangular face

A = base*height/2

A = 2*1.7/2

A = 1.7

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L = (perimeter of the base)*(depth)

L = (2+2+2)*(3)

L = 18

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3 years ago

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jeka57 [31]

Answer:

=> Apply law of cosine

$c^2=a^2+b^2-2abcos\left(C\right)$

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$z^2=6.5^2 + 9.4^2-\left(6.5\right)\left(9.4\right)\left(cos\left(131\right)\right)$

=> simplify

$z=\sqrt{\left(6.5^2+\:9.4^2\right)-\left(6.5\right)\left(9.4\right)\left(-0.65605902899\right)}$

=> calulcation

$z=\sqrt{-61.1\cos \left(131^{\circ \:}\right)+130.61},\:z=-\sqrt{-61.1\cos \left(131^{\circ \:}\right)+130.61}$

=> apply rule: Distance must be greater than 0

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2 years ago