The one who makes the kettle

The cloth used is surface area, with two bottom surfaces and one side surface (note that if the result requires an approximation, you must enter a method).

How much water is the volume of the kettle, which is equivalent to the volume of the kettle here. Therefore, unit of volume is used.

Use at least cloth:

10/2 = 5cm

3. 14×5×5×2= 157 (square centimeter)

Or1/4×10×10× 3.14× 2 =157 (square centimeter).

3. 14× 10×20=628 (square centimeter)

628+ 157=785 (square centimeter)

Can hold about water:

3. 14×5×5×20= 1570 (cubic centimeter) = 1570 (milliliter) = 1.57 (liter)