Question

1. curved surface area of cube, cuboid, cone and cylinder.

2. total surface area of cube, cubiod, cone and cylinder.​


plzz answer

Answer 1

⚘\underline{\huge{ \rm \: Answer : - }}

Answer:−

☘︎ Cube :-

☣ Volume of cube = a³

☣ Total surface = 6 × a²

☣ Curved surface area = 4 × a²

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☘︎ Cuboid :-

☣ Volume of cuboid = l × b × h

☣ Total surface = 2(lb + bh + hl)

☣ Curved surface area = 2h(l + b)

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☘︎ Cylinder :-

☣ Volume of cylinder = πr²h

☣ Total surface = 2πr(r + h)

☣ Curved surface area = 2πrh

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☘︎ Cone :-

☣ Volume of cone = ⅓πr²h

☣ Total surface = πr(l + r)

☣ Curved surface area = πrl

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☘︎ Sphere :-

☣ Volume of sphere = 4/3 πr³

☣ Total surface = 4πr²

☣ Curved surface area = 4πr²

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☘︎ Hemisphere :-

☣ Volume of hemisphere = ⅔ πr³

☣ Total surface = 3πr²

☣ Curved surface area = 2πr²

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where,

⪼ a = side

⪼ l = length

⪼ b = breadth

⪼ h = height

⪼ r = radius

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