This is a place for the community of learners in Room 8-16 to learn and enjoy math. It is an extension of the classroom making it accessible 24 hours a day, 7 days a week.
Friday, March 9, 2012
Jandrenn's Surface Area
1)
T =L x W 5 x 10 = 50
F =L x W 10 x 6 = 60
S =L x W 6 x 5 = 30
-----------------------
TOTAL = 140
TSA= 2 (T+F+S)
= 2(50+60+30)
= 2 x 140
= 280 m2
2)
3)
Volume 1)
v=7.5 x 8.5=63.75 m3
2)
V=L x W x H V=16 x 8 x 20 V= 2560 cm3
3)
V=16 x 6.5 =104 cm3
104 ÷ 8 = 13 13 x 3 =39 cm3
4)
v=π.r.r.h v=3.14 x 6 x 6 x 15 v=1695.6 cm3
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