Question

All formulas of surface,area and volume..!!!​

Answer 1

Answer:

Surface area formula

Cube: Surface area = 6 × a2

Right circular cylinder: Surface area = 2 × pi × r2 + 2 × pi × r × h. ...

Rectangular prism: Surface area = 2 × l × w + 2 × l × h + 2 × w × h. ...

Sphere: Surface area = 4 × pi × r2 ...

Right circular cone: Surface area = pi × r2 + pi × r ×( √(h2 + r2)) ...

Right square pyramid: Surface area = s2 + 2 × s × l.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

• 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.