[填空题]
The lengths of the sides of a rectanh z3vrt.9pw;jo o74).rbq gszgular plataqp-tumk m 6p )hiv( s91s10iae are measured, and the diagram shows the me(psv9aa -p1m1usi 6t)k i0m hqasured 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 multiplica2c k,ph8pm sfgbodp 1rd(3+p;oltp ,)tion so the percentage uncertainties need to be added. Uncertainty in length is one part in 50, i.e. 2%; and in the height it is one pa tgod f;ppop18)+r m pckp2l(sd,3hb,rt in 25 or 4%. Adding the uncertainties gives 6%.