Friday, March 9, 2012

Anmarie's Surface Area post

Rectangular Prism LxW
T=
10x5=50

F=
10x6=60

S=
5x6=30


TSA=2(T+F+S)
=2(50+60+30)
=2(140)
=280
m2

Triangular Prism



LxW
5x10=50
9x5=45
5x8=40


bxh÷2
8x9÷2=36cm

bxh÷2
8x9÷2=36cm

TSA= 50+45+40+36+36
=207c
m2

Cylinder
r=d÷2
r=8÷2
r=4mm

circumfrence
C=πd
=3.14x8
=25.12mm

Area=
=3.14x4x4
=3.14x16
=50.24mm






TSA=50.24+50.24+301.44




=401.92mm squared









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