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SURFCE AREA OF CONE

Ramakrishna Dhooli

19/12/2018 0 0

SURFACE AREA OF CONE Cone Cone

If, r=radis of the cone

l= slant height

Then,

1)Curved Surface Area of the cone= πrl

2)Total surface Area of cone= πr(r+l)

Ex- If,r=28 cm, l=30cm, then

1)Curved Surface Area of the cone= πrl

=22/7x28x30

=22x4x30

=2640 square cm

2)Total surface Area of cone= πr(r+l)

=22/7x28(28+30)

= 22x4(58)

=5104 square cm

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