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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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