Area and Perimeter
How to calculate perimeter
How to calculate the area
of a irregular
shape
You can count the squares inside
the shape or you can create a new shape
using dotted lines
You can use a formula
or grid paper
Units of measurement
Non-Standard units
Body
Leg
Hand
Finger
Foot
Standard units
Mm
Dm
M
Km
Cm
How to calculate area
How to calculate the
perimeter of a irregular shape
Add up all the sides or use a formula
You can use a formula
or grid paper
Main topic
Area
The formula of areas would be length
times width equals area
Area is the measurement of the
inside of a shape/building/object
the amount of space inside
an object
how much space is inside the shape
You can find the area of
a shape using grid paper by
counting the squares inside a
shape/building/object
to get the perimeter
You can also get the area
of a shape by using the formula
LxW=area
You have to put
squared after the
number
The formula of perimeter would be
length plus width times two
Perimeter is the measurement
of the outside of a shape/building
the amount of space around
a shape/building/object
how much space is around the border
Perimeter is the outline of an object
You can find the perimeter
of a shape on grid paper by
counting the squares on the border
to get the perimeter
You can also can the perimeter of
a shape by using the
formula Lx2+Wx2=Perimeter
You do not
have to put
squared after
the number
Perimeter