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maths_class_9th_notes

Mohit Kalra

18/08/2020 0 0

FORMULAE

Cylinder

Curved surface area of cylinder = 2Πrh

Total surface area of cylinder = 2Πr(h + r)

Volume of cylinder = Πr²h

Cone

Curved surface area of cone = Πrl

Total surface area of cone = 2Πr(l + r)

Volume of cone = Πr²h / 3

Sphere

Surface area of sphere = 4Πr²

Volume of sphere = 4Πr³ / 3

Cube

Surface area of cube = 4a²

Total surface area of cube = 6a²

Volume of hemisphere = a³

Cuboid

Surface area of cuboid = 2(hw + lh)

Total surface area of cuboid = 2(lw + hw + lh)

Volume of cuboid = l x w x h

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