A Solid Cone of height 18cm diameter of its base 36cm is cut from a wooden Solid sphere of radius 18cm. the percentage of wood wasted is ?
(Volume of Cone)/(Volume of Sphere) = (1/3 π r2 h)/(4/3 π r³) = (1/3 × π ×(18)2× 18)/(4/3 × π ×(18)³) = 1/4 Wood that is wasted = 3/4 × 100 = 75%
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