September 11, 2012
1.5 Perimeter, Circumference, Area
perimeter: distance around a figure
area: number of square units in a region
Triangle
Circle
Square
Rectangle
P = 4s
P = 2b + 2h
P = a +b+c
c=
A = s2
A = bh
A = 1 bh
2
A= r2
d
September 11, 2012
3. Find the perimeter and area of
and C(-2,-4).
ABC if A(-2,2), B(3,-1),
September 11, 2012
5. You a designing a mat for an 8 x 10 in picture and it is to be
2 in wide. What is the area of the mat?