This document defines and provides formulas for calculating the areas of basic geometric shapes including rectangles, trapezoids, squares, parallelograms, and ovals. For each shape, it describes the characteristics that define the shape and provides the relevant formula to calculate its area. The shapes covered are rectangles, trapezoids, squares, parallelograms, and ovals, with their defining features and area formulas given for quick reference.

1. BY:
MELSI MELISSA (110210101073)
DEPARTEMENT OF MATHEMATICS
FACULTY OF TEACHER TRAINING AND EDUCATION
UNIVERSITY OF JEMBER
2013

2. RECTANGLE
 Rectangle is a flat, two-
dimensional wake formed by
two pairs of ribs, each of
equal length and parallel with
her partner, and has four
corners all of which is a right
angle.
Sides referred to as the longest
length (p) and the shortest ribs
referred to as the width (l).
 Rectangle formula:
K = 2.(p+l)
L = p.l

3. TRAPEZOID
 Trapezoid is a flat two-dimensional
wake formed by four ribs that two
of them are parallel but not the
same length.
Right-angled trapezium, trapezoid
which is where two of the four
corners are right angles. Ribs are
parallel perpendicular to the height
of the trapezoid
 Trapezoid formula:
 L = (amount parallel x height)/2

4. SQUARE
 Square is a two-
dimensional plane formed
by four side (a) of the
same length and has four
corners all of which is a
right angle. The time ago
plane called a square.
 Square formula:
 L = a^2 or L = s^2

5. PARALLELOGRAM
 Parallelogram is a two-
dimensional plane formed by
two pairs of side, each of
equal length and parallel with
her partner, and has two pairs
instead of right-angled
corners, each of which is
equal to the angle in front of
it.
 Parallelogram formula:
K = 2.a+2. hypotenuse
L = a.t

6. OVAL
 An elliptical oval shape. Ellipse is the
formula for the area
L = 22/7 x A x B
where,
A = r minor (short)
B = r major (long)
K = 22/7 x square of (2 x ((1/2 A) ^ 2 +
(1/2 B) ^ 2)
where,
A = r minor (short)
B = r major (long)
note = 22/7 is the value approaches phi
(3.14 ...)

7. THANK YOU. . .