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3 years ago

A cone is a polyhedron with a circular base. true or false?

Mathematics

2 answers:

klemol [59]3 years ago

5 0

False. Cylinders and cones are not just polyhedrons with circular bases.

Stells [14]3 years ago

4 0

Answer:

No, A cone is not a polyhedron with a circular base.

Step-by-step explanation:

A polyhedron is a solid, three-dimensional shape that has flat faces.

The faces of a polygon are polygons, which means they have straight sides.

Example-Pyramid.

No, cone is not a polyhedron since cone has curved surface and not flat faces.

Though cone is a 3-dimensional figure with circular base and slant height meeting at the vertex.

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4 years ago

Write an absolute value inequality that

fiasKO [112]

Answer:

All real numbers greater than or equal to -1 and less than or equal to 2

Step-by-step explanation:

Let

A_1 ------> the area of rectangle

A_2 ----> the area of triangle

we know that

$\left|A_1-A_2\right|\le 6$

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$A_1=4(x+2)=(4x+8)\ units^2$

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$A_2=(1/2)(4)(5)=10\ units^2$

substitute

$\left|(4x+8)-10\right|\le 6$

Simplify

$\left|4x-2\right|\le 6$

First case (positive value)

$+(4x-2) \leq 6$

$4x \leq 6+2$

$4x \leq 8$

$x \leq 2$

Second case (negative value)

$-(4x-2) \leq 6$

Multiply by -1 both sides

$(4x-2) \geq -6$

$(4x \geq -6+2$

$4x \geq -4$

$x \geq -1$

therefore

The solution for x is the interval -----> [-1,2]

All real numbers greater than or equal to -1 and less than or equal to 2

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