A wooden toy was

_Given-

_{Radius of Hemisphere(r) = Radius of Cylinder(r) = 3.5 cm}

_{Height of Cylinder(h) = 10 cm}

_{Volume of Cylinder = π × (r)}²× h = (22/7) × (3.5)²× 10

_{= 385 cm}³

_{Volume of Each Hemisphere = (2/3) × π × (r)}³

_{= (2/3) × (22/7)× (3.5)}³

_{= 89.83 cm}³

_{Thus, Volume of wood used in the toy}

_{= Volume of Cylinder-2 × Volume of Each Hemisphere}

_{= 385-2× 89.83}

_{= 385-179.66}

_{= 205.34 cm}³