13 terms

Math Area and Circumference of 2D shapes

Area and Circumference of 2D shapes
STUDY
PLAY
triangle area
A=½bh
triangle perimeter
P=a+b+c side=a,b,c
square area
A=s^2
square perimeter
P=4s
rectangle area
A=lw
rectangle perimeter
P=2l + 2w
parallelogram area
A=bh
parallelogram perimeter
P=2b+2a base=b, side=a
circle area
A=πr^2
circle circumference
C=2πr OR C=πd
circle diameter
D=2r
trapezoid area
A=½h(a+b) height=h bases=a,b
trapezoid perimeter
P=a+b+c+d sides=a,b,c,d