HELP~ F1 MATHs
2007-01-27 4:17 am
Ann has bought a pen stand for her father and its heght is 11cm . It has the shape of a prism and its base is a regular hexagon of side 5 cm . If the total outer surface area of the pen stand os 395 cm2 , find its capacity?(要式)
回答 (3)
2007-01-27 4:30 am
✔ 最佳答案
(6*5)*6+2x=395cm2180+2x=395
x=(395-180)/2
x=(215/2)
x=107.5(cm2)
x= base area
x cm2*11cm= 107.5*11 = 1182.5(cm3)
2007-01-31 5:31 am
Base area=395-5*11*6=395-380=15cm2
Its capacity=15*11=165cm3
2007-01-30 21:40:06 補充：
Base area=395-5*11*6=395-330=65cm2Its capacity=65*11=715cm3
Its capacity=15*11=165cm3
2007-01-30 21:40:06 補充：
Base area=395-5*11*6=395-330=65cm2Its capacity=65*11=715cm3
2007-01-27 4:57 am
area of hexagon = [395-6*(s*h/2)]
Cap. of prism= 1/3 *area of hexagon*h
Cap. of prism= 1/3 *area of hexagon*h
收錄日期: 2021-04-12 19:58:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070126000051KK03218