中三math

2008-05-04 2:11 am
計ratio 既..要詳細既公式!
soild A:
volume=54cm^3
area of shaded region=10cm^2
soild B:
volume=432cm^3
area of shaded region=A cm^2

回答 (1)

2008-05-04 2:30 am
✔ 最佳答案
the volume ratio is L^3: L'^3(L is length)
the area ratio is A^2: A'^2 (A is the area)
the volume ratio of B: A=432/54=8:1
the length ratio ofB:A= 2:1
therefore, the area ratio of B:A=4:1=10x4=40cm2


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