2 years ago

19) A painting is 10 in wide and 20 in tall. If

Mathematics

1 answer:

Oksana_A [137]2 years ago

7 0

Answer:

160

Step-by-step explanation:

10 x 20=200

10 - 2 = 8

8 x 20 = 160

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Answer:

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4 years ago

If A(3,4) and B(10,4) are the end points of a diameter of circle "O", what is the area of the circle O

ikadub [295]

Answer:

$\large\boxed{\dfrac{49\pi}{4}}$

Step-by-step explanation:

The formula of an area of a circle:

$A=\pi r^2$

r - radius

We have the endpoints of a diameter of a circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points A(3, 4) and B(10, 4):

$d=\sqrt{(10-3)^2+(4-4)^2}=\sqrt{7^2+0^2}=\sqrt{7^2}=7$

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$r=\dfrac{7}{2}$

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$A=\pi\left(\dfrac{7}{2}\right)^2=\dfrac{49\pi}{4}$

There is no such answer in the answers to choose.

Apparently you have some error in the coordinates of the endpoints.

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rosijanka [135]

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Step-by-step explanation:

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Answer:

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