點求球體的半徑!?
回答 (3)
2012-01-12 9:40 pm
設半徑=r 和表面面積=A
36兀=4/3兀r^3
27=r^3
r=3
A=4兀r^2
A=4兀(3)^2
A=36兀
所以
半徑=3和表面面積=36 兀
36兀=4/3兀r^3
27=r^3
r=3
A=4兀r^2
A=4兀(3)^2
A=36兀
所以
半徑=3和表面面積=36 兀
2012-01-12 8:37 pm
volume of sphere, 球體的體積 = (4/3)(pi)(r^3) where r is the radius
surface area of sphere, 球體的表面面積 = 4(pi)(r^2)
(4/3)(pi)(r^3) = 36(pi)
r^3 = 27
r = 3
surface area of sphere = 4(pi)(3^2) = 36(pi)
surface area of sphere, 球體的表面面積 = 4(pi)(r^2)
(4/3)(pi)(r^3) = 36(pi)
r^3 = 27
r = 3
surface area of sphere = 4(pi)(3^2) = 36(pi)
2012-01-12 4:24 am
收錄日期: 2021-04-20 12:00:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120111000051KK00667