Theoretically, the plane figure bounded by the straight lines is called Polygon.

The name of the polygon are provided by their names:

For example, "Triangle" is a polygon with three sides.

"Quadrilateral(rectangle, square, rhombus,parallelogram)" is a polygon with four sides

and so on.

Hope this information will help you to some extent.

Do you mean

4% of x =28

Then, here is a solution to your problem.

i.e. 4/100 * x = 28

i.e. x = 28 * 100/4

i.e. x = 7 * 100

So, x =700

Hope this helped you to some extent.

volume of an cube = (one side of cube)^3

Note: In cube, length = breadth = height

Hope this helped you to some extent.

Circumference or perimeter of a circle (C) = 2 *pie* r = pie * d

where, pie = 22/7

and r = radius of circle

d = 2r = diameter of circle

Hope this helped you to some extent.

There is a mathematical relationship between hcf and lcm:

i.e. hcf  x  lcm  = product of given expressions

So, lcm = product of given expressions / hcf

Hope this helped you to some extent.

In  simple,

slope = rise/ run

i.e. it signify the the inclination of the given surface or line with respect to the given standard line.

Hope this helped you to some extent.

For the impossible event, the probability is "zero"

and for the certain event is "one".

Here the "certain event" signify that "it is sure to happen"

and for "likely cases", the probability depends upon the "event".

Hope this helped you to some extent.

The general form to calculate the triangle is:

square root of (s(s-a)(s-b)(s-c))

where, "s" is the semi-perimeter of the triangle = (a+b+c)/2

and a,b and c are the sides of a given triangle.

Other areas for special triangles are generalized form of this form.

Hope this helped you to some extent.

9/16+1/2

=9/16 + 8/16 [ making the denominator of both terms same]

= 17/16 [ adding the numerator of same denominator]

= 1 whole 1/16 [ In mixed fraction]

hope this helped you to some extent.

8y + 6 = 6y

or, 2y +6=0 [ subtracting 6y from both sides]

or, 2y = -6 [ subtracting 6 on both sides]

so, y = -3 [ dividing both sides by 2]

Hope this helped you to some extent.