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2 years ago

What is the surface area? 2 mm 2 mm 2 mm square millimeters

Mathematics

1 answer:

Alona [7]2 years ago

4 0

Answer:

24 mm^2

Step-by-step explanation:

length x width x 6 sides in a cube

(2)(2)(6)=24

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The general form of the equation of a circle is x2 + y2 + 42x + 38y − 47 = 0. The equation of this circle in standard form is .

Readme [11.4K]

Answer:

(-21,-19)

$\sqrt{849}$

Standard form

Step-by-step explanation:

We are given the equation of circle

$x^2+y^2+42x+38y-47=0$

General equation of circle:

$x^2+y^2+2gx+2fy+c=0$

Centre: (-g,-f)

Radius: $\sqrt{g^2+f^2-c}$

Compare the equation to find f, g and c from the equation

$g\rightarrow 21$

$f\rightarrow 19$

$c\rightarrow -47$

Centre: (-21,-19)

Radius (r) $=\sqrt{21^2+19^2+47}=\sqrt{849}$

Standard form of circle:

$(x+21)^2+(y+19)^2=849$

The centre of circle at the point (-21,-19) and its radius is $\sqrt{849}$ .

The general form of the equation of a circle that has the same radius as the above circle is standard form.

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2 years ago

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Which Greek mathematician is known as the father of geometry

erastova [34]

Answer:

Euclid was a great mathematician and often called the father of geometry.

Step-by-step explanation:

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The coordinates of point T are (0,5). The midpoint of ST is (2, -4). Find the coordinates of point S.

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Answer: Coordinates for S (4,-13)

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The three sides of a triangle measure 60 cm, 80 cm, and I m 10 cm. What is the perimeter of

Tju [1.3M]

Answer:

250cm

Step-by-step explanation:

60cm+80cm+110cm= 250cm

110 cm comes from 100cm in one meter combined with the other 10cm

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