3 years ago

Pleaseeee help meeee

Mathematics

1 answer:

yan [13]3 years ago

4 0

Don’t really know if you still need help

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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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3 years ago

Enter the value of the 8 in the following number. 438.13

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Answer:

Step-by-step explanation:

It is in the one's place, so it is just 8x1, which is 8

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3 years ago

X/3 + 4<6 pls help will mark branliest

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Answer:

x < 6

Step-by-step explanation:

$\frac{x}{3}+4 < 6$

Subtract 4 form both sides

$\frac{x}{3}$

Multiply both sides by 3

$x < 2*3\\\\x < 6$

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