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# 一條數學~中二.

30. A picture frame is in the shape of a rectangle.All the measurements are shown in the figure and are correct to the nearest cm.Find the max. and min. areas of the picture frame.

picture frame: 86cm x 58 cm picture: 70cm x 42 cm

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- 9 years agoFavorite Answer
since all the measurements are shown in the figure and are correct to the nearest cm.

max. areas of the picture frame

86.4 x 58.4 - 69.5 x 41.5

= 5045.76 - 2884.25

= 2161.51 cm^2

min. areas of the picture frame

85.5 x 57.5 - 70.4 x42.4

= 1931.29 cm^2

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