From a rectangular metal sheet of length 35 cm and breadth 25cm, four square of side 2.5cm are cut at the corners removed.find the volume of box obtained by folding the remaining sheet
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thus, A cylinder is formed by folding the remaining sheet...so
circumference of the base circle of cone = 35 - 2×(2.5)
= 30cm
Circumference = 2πr
30 = 2×22/7×r
210/44 = r
4.7cm = r
height = breadth of the rectangle
= 25-2×(2.5)
= 25-5
= 20cm
Volume of cylinder = πr²h
= 22/7×4.7×4.7×20
= 22/7×22.09×20
= 22×63.11
= 1388.42cm³
circumference of the base circle of cone = 35 - 2×(2.5)
= 30cm
Circumference = 2πr
30 = 2×22/7×r
210/44 = r
4.7cm = r
height = breadth of the rectangle
= 25-2×(2.5)
= 25-5
= 20cm
Volume of cylinder = πr²h
= 22/7×4.7×4.7×20
= 22/7×22.09×20
= 22×63.11
= 1388.42cm³
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