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3 years ago

Find the area of the circle below Need it ASAP

Mathematics

1 answer:

pishuonlain [190]3 years ago

3 0

Answer:

113.04 (i used 3.14 for pi)

Step-by-step explanation:

area of circle formula = pi r^2

radius = 6

6^2 = 36

3.14 x 36 = 113.04

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dlinn [17]

Answer:

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2. 4 cm

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Step-by-step explanation:

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3 years ago

Analysis of an accident scene indicates a car was traveling at a velocity of 69.5 mph (31.1 m/s) along the positive x-axis at th

STatiana [176]

We can find the acceleration via

${v_f}^2-{v_i}^2=2a\Delta x$

We have

$\left(5.20\dfrac{\rm m}{\rm s}\right)^2-\left(31.1\dfrac{\rm m}{\rm s}\right)^2=2a(115\,\mathrm m)$

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Then by definition of average acceleration,

$a_{\rm ave}=\dfrac{v_f-v_i}t$

so that

$-4.09\dfrac{\rm m}{\mathrm s^2}=\dfrac{5.20\frac{\rm m}{\rm s}-31.1\frac{\rm m}{\rm s}}t$

$\implies\boxed{t=6.33\,\mathrm s}$

We alternatively could have found the time without knowing the acceleration. Since acceleration is constant, the average velocity is

$v_{\rm ave}=\dfrac{x_f-x_i}t=\dfrac{v_f+v_i}2$

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$\dfrac{115\,\rm m}t=\dfrac{5.20\frac{\rm m}{\rm s}+31.1\frac{\rm m}{\rm s}}2$

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3 years ago

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Sedaia [141]

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I think its A.

Step-by-step explanation:

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