8800cm2
8448cm2
4400cm2
4224cm2
Correct answer is A
L2 = 962 + 282
= 9216 + 784
= 10000
L = √10000
= 100cm
curved surface area = πrl
= 227×28×100
= 8800cm2
area of cone = area of sector
area of sector = 8800cm2
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