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masya89 [10]
3 years ago
7

What is 15.7 round to the nearest 10th

Mathematics
1 answer:
Anna [14]3 years ago
5 0

15.7 is already rounded to the nearest 10th.

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What is the area of the sector with a central angle of 49° and a radius of 11 cm? Use 3.14 for pi and round your final answer to
olga_2 [115]

Answer:

\boxed{\text{51.71 cm}^{2}}

Step-by-step explanation:

If the angle θ is in radians, the formula for the area (A) of a sector of a circle is

A = ½r²θ

If θ is in degrees

A = \dfrac{1}{2}r^{2}\theta \times \dfrac{\pi \text{ rad}}{180^{\circ}}= \pi r^{2}\times\dfrac{\theta }{360}

Data:

θ = 49°

r = 11 cm

Calculation:

\begin{array}{rcl}A& = &3.14\times 11^{2}\times\dfrac{49}{360}\\\\ & = &3.14 \times 121 \times 0.1361\\ & = & \mathbf{51.71}\\\end{array}\\\text{The area of the sector is }\boxed{\textbf{51.71 cm}^{2}}

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23x> or equals to 184

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In a particular year, the United States had a national debt of 1.1 x 1013 U.S. dollars.
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The answer is to your question is 100:1
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4 sisters share 3 muffins equally how much does each get
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Answer:

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Step-by-step explanation:

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