2 years ago

Find the distance between the points (8, – 7) and ( – 4,9). Hint: Use the Pythagorean theorem

1 answer:

6 0

8+4=12
9+7=16
12^2=144
16^2=256
144+256=400
square root of 400 is 20

therefore the distance from (8, -7) to (-4,9) is 20.

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2 years ago

A circle has a sector with area \dfrac{17}{2}\pi 2 17 πstart fraction, 17, divided by, 2, end fraction, pi and central angle o

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Step-by-step explanation:

Given that,

The area of sector is, $\dfrac{17}{2}\pi$

The central angle is $\dfrac{17}{9}\pi$

We need to find the area of circle.

We know that,

$\text{Area of sector}=\dfrac{\text{central angle}}{2\pi}\times \text{Area of circle}\\\\\text{Area of circle}=\dfrac{2\pi \times \text{Area of sector}}{\text{central angle}}\\\\=\dfrac{2\pi \times \dfrac{17\pi}{2}}{\dfrac{17\pi }{9}}\\\\=9\pi$

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