本题目来源于试卷: Physics Unit1: Introduction Measurement & Estimating，类别为 国际高中通用物理
[单选题]
Wall posters are usually sold curled up in cylindrical cardboard tubesz 5cuqi 41ksqrs/f f-ql6. 3op. un+;: b/5irfksi k xdgb4v3 6iIf the length of the tube isfik4d/; 5ks 6iv3:uirbn+xgb 84.5 cm, and the diameter of the tube is 2.40 cm, what is the area of the poster, in $cm^{2}$? (Assume the poster doesn't overlap itself.)
A. $200 \; cm^{2}$
B. $400 \; cm^{2}$
C. $600 \; cm^{2}$
D. $2000 \; cm^{2}$
参考答案: C
本题详细解析:
暂无
| 
