To reduce friction on an aircraft, the surfaces (skin) are ? and the body is ?
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(possible answers below)
![To reduce friction on an aircraft the surfaces skin are and the body is possible answers below class=](https://us-static.z-dn.net/files/d0e/e8003dff89a87e2142497c2193b29d37.png)
Answer:
Surface (skin) should be smooth and body should be streamlined shaped.