[填空题]
The lengths of the sides of a rectangular plate are measured, and tu +,mfky,+a qy muaj3 hgq9:-ehe 0 oi*9gyl hin 0-sovw7diagram shows the measured values with their unceriy 9v0 -honlsgw 0i7o*tainties. 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 uncertai cx-;ravx *eh 7s5.nkbnties need to be added. Uncertainty in length is one part in 50, i.e. 2%; and in the heiah5cxb-nr ;7* x .veskght it is one part in 25 or 4%. Adding the uncertainties gives 6%.
Post time 2024-8-21 21:38:19
