If a sphere has a surface area of 100m square, what is its radius, to the nearest tenth of a metre?
Please help!!!
radius of sphere
2008-07-30 3:28 pm
回答 (1)
2008-07-30 3:37 pm
✔ 最佳答案
圓形表面積公式(A)= 4π(r)^2100=4π(r)^2
25=π(r)^2
r^2 = 7.9577.....
r = 2.82....
therefore, radius = 2.8 m (corr to tenth)
參考: 我
收錄日期: 2021-04-28 23:54:27
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