A hollow cone of base radius 20 cm and height 10 cm is held with its vertex downwards. Oil is poured into it at the rate of 15 cm3 /s. Find the rate of increase in the depth of the oil when the depth is 3 cm
Cylinders
A cylinder is a three-dimensional solid shape with two parallel and congruent circular bases, joined by a curved surface at a fixed distance. A cylinder has an infinite curvilinear surface.
Cones
A cone is a three-dimensional solid shape having a flat base and a pointed edge at the top. The flat base of the cone tapers smoothly to form the pointed edge known as the apex. The flat base of the cone can either be circular or elliptical. A cone is drawn by joining the apex to all points on the base, using segments, lines, or half-lines, provided that the apex and the base both are in different planes.
A hollow cone of base radius 20 cm and height 10 cm is held with its vertex downwards.
Oil is poured into it at the rate of 15 cm3
/s. Find the rate of increase in the depth of the
oil when the depth is 3 cm
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