All formulas of chapter surface area and volume?​

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All formulas of chapter surface area and volume?​

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Abigail 2 weeks 2021-09-06T05:03:04+00:00 2 Answers 0 views 0

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    0
    2021-09-06T05:04:07+00:00

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    0
    2021-09-06T05:04:18+00:00

    HI BUDDY !

    CUBOID

    Let length = l, breadth = b and height = h units. Then

    Volume = (l x b x h) cubic units.

    Surface area = 2(lb + bh + lh) sq. units.

    Diagonal = l2 + b2 + h2 units.

    CUBE

    Let each edge of a cube be of length a. Then,

    Volume = a3 cubic units.

    Surface area = 6a2 sq. units.

    Diagonal = 3a units.

    CYLINDER

    Let radius of base = r and Height (or length) = h. Then,

    Volume = (r2h) cubic units.

    Curved surface area = (2rh) sq. units.

    Total surface area = 2r(h + r) sq. units.

    CONE

    Let radius of base = r and Height = h. Then,

    Slant height, l = h2 + r2 units.

    Volume = r2h cubic units.

    Curved surface area = (rl) sq. units.

    Total surface area = (rl + r2) sq. units.

    SPHERE

    Let the radius of the sphere be r. Then,

    Volume = r3 cubic units.

    Surface area = (4r2) sq. units.

    HEMISPHERE

    Let the radius of a hemisphere be r. Then,

    Volume = r3 cubic units.

    Curved surface area = (2r2) sq. units.

    Total surface area = (3r2) sq. units.

    Note: 1 litre = 1000 cm3.

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