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Sunday, March 11, 2012

Karl's Surface Area Post

T=lxw 5x10=50m2

F=lxw 6x10=60m2

S=lxw 5x6= 30m2

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









lxw 5x10=50cm bxh/2
lxw 9x5=45cm 9x8/2
lxw 5x8=40cm =72/2
=36cm2



TSA= 50+45+40+36+36
TSA= 207cm2











d/2=r
8/2=r
4=r


c= pie d
c= 3.14x8
c=25.12mm








lxw
=25.12x12= 301.44mm2

Area of a circle=pie r2
=3.14x4x4
=50.24mm2

TSA = cirlce + circle+ rectangle
TSA= 50.24+50.24+301.44 =
401.92mm2

VOLUME


bxh/2 x h bxh1/2 x h2
3x5/2 v=7.5x8.5=63.75m3
15/2
=7.5m




l . w. h
v= 20 x 8 x 16
v=2560cm3




bxh/2 x h bxh1/2 x h2 3/8= 0.375cm
4x8/2 v= 16x6.5 0.375x104 = 39cm3
32/2 v= 104 cm3
=16cm






d/2 pie.r.r.h
12/2 v= 3.14 x 6 x6 15
6cm v= 1695.6cm3








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