Friday, March 9, 2012

Gielh's Surface area and volume post


1) (bxh/2)xh
5x3/2 15/2 = 7.5
7.5x8.5= 63cm3

2) lxwxh
20x8x16= 2 560 cm3

3) (bxh)h
4x8/2 32/2 = 16
16x6.5= 104
104÷8x3 = 39cm3
4) πr2
r=d/2
r= 12/2
r= 6
3.14x6x6= 103. 04
103.04x15 = 1695.6cm3




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Video of a Surface Area:



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