Sunday, March 11, 2012

Mary's Surface Area Post and Volume Post

Surface Area:












Volume:

Triangular Prism:
( B x H ÷ 2 ) H
( 3 x 5
÷ 2 ) 8.5
( 15
÷ 2 ) 8.5
( 7.5 ) 8.5
63.75m
³



Rectangular Prism:
L x W x H
20 x 8 x 16
2560cm³




Triangular Prism: 3/8 full
( B x H ÷ 2 ) H
( 8 x 4
÷ 2 ) 6.5
( 32
÷ 2 ) 6.5
( 16 ) 6.5
104 cm
³

104 ÷ 8 = 13cm³
13 x 3 = 39cm³




Cylinder:
R = D ÷ 2
R = 12
÷ 2
R = 6cm

π x R x R x H
3.14 x 6 x 6 x 15
1695.6cm
³


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