[填空题]
The lengths of the sides ofiw2eg9 tbtx6. )b o3ekra/g.auao6m- t u0iv*p b:8af a rectangular plate are measured, and the diagram shows tb u:v86opa f*t-a0 iumhe measured values with their uncertainties. 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 peb/+p7faug u,hubg )b qk:ve (op; 0h(lrcentage uncertainties need to be added. Uncertainty in length is one part ifbh/+gqu7 u (o0p ;b (:),lbpaekgvhun 50, i.e. 2%; and in the height it is one part in 25 or 4%. Adding the uncertainties gives 6%.