perimiter is just the length around
something fun is if all the angles are right angles, then the perimiter is... confusing, I'll explain later
area=length times width for rectangles and 1/2base times heigt for triangles
easiest way to find area is to find the area of 2 shapes
8.
see, all right angles
if we 'pushed' the y side to the right and the 21 side down, we get 1 single rectangle with length 55 and width 43, so then perimiter=2(55+43)=196ft
the area, is
hmm, cut into 2 rectangles
55 by 15 and y by x
x=55-21=34
y=43-15=28
area=55*15+34*28=1777 squar feet
9., just add them up
to get
21 and 3/4ft=perimiter
area
cut into 2 triangles
or use trapezoid
base1=7 and 3/8
base2 is 2 and 1/8
height=5
area=(1/2)h(b1+b2)
so area=(5/2)(19/2)=23/2=11 and 1/2 square feet
11. push x left and 1 and 3/8 up
it is 3 and 1/2 by 2 and 1/4
so perimiter=2(3 and 1/2+2 and 1/4)=11 and 1/2 inches
area
it is 1 and 3/8 by 1 and the 2nd one is y by 2 and 1/4
y=3 and 1/2-1 and 3/8=2 and 1/8
area=197/32 square inches or6 and 5/32 square inches
