area and perimeter.ppt tutorials for kids

Area and perimeter

1. Are
a
Are
a
& &
PerimeterPerimeter

2. SHAPE OVERVIEWSHAPE OVERVIEW
Rectangle
Triangle
Hexagon
Trapezoid
Square
Parallelogram
Pentagon
Circle

3. PerimeterPerimeter
To calculate the perimeter of an object or space, you To calculate the perimeter of an object or space, you
will need to will need to add up all of the outside add up all of the outside
measurementsmeasurements..
2 + 4 + 2 + 4 = ________2 + 4 + 2 + 4 = ________
2
4

4. Tricky PerimetersTricky Perimeters
(Look carefully.)(Look carefully.)
You will need You will need
to remember to remember
which sides which sides
to add and to add and
the values the values
for each side.for each side.
2
22
2
3
2
2 2

5. AREAAREA

You will use different formulas for each You will use different formulas for each
type of shape when finding areatype of shape when finding area

Each answer will require you to use the Each answer will require you to use the
measurement given, and it will always measurement given, and it will always
be squared…ex.) 9 be squared…ex.) 9 ft.ft.
22

6. Are
a of
Are
a of
a
Rectangle
a
Rectangle
A = L x WA = L x W
The area formula for a rectangle is length x The area formula for a rectangle is length x
widthwidth
L
W

7. Find the area Find the area
of these rectangles.of these rectangles.
1
22
3
3
45
6

8. Find the area of these squares. Find the area of these squares.
5
12
25
8
16

9. AREA OF A PARALLELOGRAMAREA OF A PARALLELOGRAM

A = B x HA = B x H

(base x height)(base x height)
H
B

10. Find the area of these Find the area of these
parallelograms.parallelograms.
4
7
14
19
2
3.5

11. Are
a of a Triangle
Are
a of a Triangle
Finding the area of a triangle is different.Finding the area of a triangle is different.
A = ½ (B x H)A = ½ (B x H)

H
B

12. Find the area of these Find the area of these
triangles.triangles.
5
7
3
4
2
3
6
8

13. AREA OF A TRAPEZOIDAREA OF A TRAPEZOID
A = ½ H (bA = ½ H (b
11 + b + b
22))

½ Height (base 1 + base 2)½ Height (base 1 + base 2)
B
2
H
B
1

14. Find the area of the Find the area of the
trapezoids.trapezoids.
31
23
12
14
9
16