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$l=$ length of cuboid

$b=$ breadth of cuboid

$h=$ height of the cuboid.

where $l=$ length of cuboid

$b=$ breadth of cuboid

$h=$ height of cuboid

where, $a=$ side of the cube.

$a$ is the side of the cube.

$Plane Surface Area=2πr_{2}$

$Total Surface Area=2πr(r+h)$

where,

$’r’ is radius of the base and ’h’ is the height$

$r=$ radius of the cylinder

$h=$ height of the cylinder

$r_{1}=$ outer radius

$r_{2}=$ inner radius

$Plane Surface Area=πr_{2}$

$l_{2}=r_{2}+h_{2}$

$Curved Surface Area=π×r×l$

$Total Surface Area=πrl+πr_{2}=πr(r+l)$

where,

$’r’ is the radius of the base$

$’l’ is the slant height$

$’h’ is the perpendicular height$

$r=$ radius of the cone.

$h=$ height of the cone.

where , $r=$ radius if the sphere

$r$ is the radius of the sphere.

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8 cm

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