[填空题]
The lengths of the sides of a rectangulaawu v.+,yrvxk6 ou of*q,p xtc:;k.8vr plate are measured, and the diagra.l 0k98g 2g7jkdfaiulr t2i4rm shows the measured values with their uncerj0 9.rk ll 427gad2gift i8ruktainties. What is the percentage error in the area of the plate? %. (Remember to exclude the % symbol with your answer.)
参考答案: 6
本题详细解析: Area involves a multiplication so the percentage uncertainties nev)t buj s;*/bved to be added. Uncertainty b sb;/*tvjv)uin length is one part in 50, i.e. 2%; and in the height it is one part in 25 or 4%. Adding the uncertainties gives 6%.