[填空题]
The lengths of the sides of 3h cuj zjfp/ y i28,ejvz5y07sa .,s/yu7f5nhaikh+ q v9 rq o4krectangular plate are measured, and the diagram shows th 9/ok,+4qnhyf kqriau.5v7 she 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 percentay 4 j-m dpp0d ock9e.9.mdm4jdge uncertainties need to be added. Uncertainty in length is one partop ..j-04y 9djmeddpcdmm49k in 50, i.e. 2%; and in the height it is one part in 25 or 4%. Adding the uncertainties gives 6%.