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標題:

P.6 Maths

發問:

The area of the bulletin board is 4.65 2 m and its width is 1.5m. Find its length.A lunch box is 16 cm long, 12 cm wide and 7.5 cm high. Find its capacity.The tank is 50 cm long and 38 cm wide. The water is 25 cm high. After putting plants,fish and seashells into the tank, the water rises to 33 cm. Find the total... 顯示更多 The area of the bulletin board is 4.65 2 m and its width is 1.5m. Find its length.A lunch box is 16 cm long, 12 cm wide and 7.5 cm high. Find its capacity.The tank is 50 cm long and 38 cm wide. The water is 25 cm high. After putting plants,fish and seashells into the tank, the water rises to 33 cm. Find the total volume ofthe plants, fish and seashells.56 out of 100 pupils like swimming. It means that out of every 100 pupils, ___________pupils like swimming on average.The price of a book is increased by 8%. It means that for every $100 of the original price, the price is increased by $_______.

最佳解答:

您好,我是 lop,高興能解答您的問題。 (1) Its length is : 4.65 ÷ 1.5 = 3.1 m Answer : Its length is 3.1 m . (2) Its capacity is : 16 × 12 × 7.5 = 192 × 7.5 = 1440 cm3 Answer : Its capacity is 1440 cm3 . (3) The total volume of the plants , fish and sheshells is : 50 × 38 × ( 33 - 25 ) = 50 × 38 × 8 = 1900 × 8 = 15200 cm3 Answer : The total volume of the plants , fish and sheshells is 15200 cm3 . (4) 56 out of 100 pupils like swimming. It means that out of every 100 pupils, 56 pupils like swimming on average .(5) The price of a book is increased by 8%. It means that for every $100 of the original price, the price is increased by $ 8 .

其他解答:

1. area=width x length -> 4.65m = 1.5m x length -> length = 4.65/1.5 = 3.1m 2. volume = long x width x height = 16 cm x 12 cm x 7.5 cm = 1440 cubic cm 3. volume of plants, fish, and seashell = increased water volume = (33cm - 25cm) x 50 cm x 38cm = 15200 cubic cm or 1.52 cubic meter 4. 56 5. price increase = $100 x 8% = $8|||||1)Let the length of it is x. (x)X(1.5)=4.652 x=4.652/1.5 x=3.1(準確至小數後一位數字) 2)The capacity of it is: 16X12X7.5 =1440cm^3 3)The total volumn of plants ,fish and seashells is: (50X38X33)-(50X38X25) =62700-47500 =15200cm^3 4)The space should be write _56_ 5)The space should be write _8_6A560DB67A298191
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