Answer:
297cm^3π
Explanation:
R is a radius of the base of a cone, and r of top surface radius.
V=(1/3)×π×depth×(r^2+r×R+R^2)
V=(1/3)×π×3cm×(3^2+3×4.5×4.5^2)
V=(1/3)×π×3cm×(9cm^2+3cm×4.5cm×20.25cm^2)
V=(1/3)×π×3cm×(12cm^2×24.75cm^2)
V=(1/3)×π×3cm×(297cm^4)
V=(1/3)×π×891cm^3
V=(891cm^3/3)π
V=297cm^3π
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