3 years ago

Help please brainly is the reward

Mathematics

1 answer:

Elis [28]3 years ago

7 0

Step-by-step explanation:

A. First know that

$rectangle \: area \: = \: len \: \times width \: \\ = 12ft\times 18ft \\ = 216 \: ft ^{2}$

$sq \: area \: = ( one \: side)^{2} \\ = (13ft)^{2} \\ = 169ft^{2}$

Expression

 $cost \: = 169(3.50) + 216(3.50) \:$ 

$1347.50

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A sector of a circle of 7cm has an area of 44cm².calculate the angle of the sector,correct to the nearest degree π =22\7

Hitman42 [59]

Answer:

$\theta=102.85^{\circ}$

Step-by-step explanation:

Given that,

The radius of circle, r = 7 cm

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We need to find the angle of the sector. The formula for the area of sector is given by :

$A=\dfrac{\theta}{360}\pi r^2$

Solve for $\theta$ .

$\theta=\dfrac{360A}{\pi r^2}\\\\\theta=\dfrac{360\times 44}{\dfrac{22}{7}\times 7^2}\\\\\theta=102.85^{\circ}$

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3 years ago

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Answer
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Reason
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2 years ago

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