Traditional Culture Encyclopedia - The 24 Solar Terms - Xiaohua wants to make a cloth cover for the kettle. How much cloth should he use at least? How much water can this kettle hold?
Xiaohua wants to make a cloth cover for the kettle. How much cloth should he use at least? How much water can this kettle hold?
(1) Side area of kettle: 3. 14× 10×20=628 (square centimeter),
Kettle bottom area: 3. 14×( 10÷2) 2,
=3. 14×5 2 ,
=78.5 (square centimeter)
Surface area of kettle: 628+78.5=706.5 (square centimeter);
Answer: At least 706.5 square centimeters of cloth should be used.
(2)3. 14×( 10÷2) 2 ×20,
=3. 14×5 2 ×20,
=3. 14×25×20,
= 1570 (cubic centimeter),
= 1.57 (liter);
A: This kettle can hold 1.57 liters.
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