An Inverted cone of vertical height 12 cm and the radius of base 9 cm contains water to a depth of 4 cm. Find the area of the interior surface of the cone not in contact with the water ( Use 1 : 22/7) O 402.12cm 298cm 377.14cm O 315cm

An inverted cone of vertical height 12cm and the radius of base 9cm contains water to a depth of 4cm . Find the area of the interior surface of the cone not in contact with the water. Use pi=22/7 (A) 402.12cm^(2) (B) 298cm^(2) (C) 377.14cm^(2) (D) 315cm^(2)

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