Volume of a coneGiven the radius and h, the volume of a cone can be found by using the formula: b is the area of the base of the cone. Since the base is a circle, area of the base = pi × r^{2} Thus, the formula is V_{cone} = 1/3 × pi × r^{2} × h Use pi = 3.14 Example #1: Calculate the volume if r = 2 cm and h = 3 cm V_{cone} = 1/3 × 3.14 × 2^{2} × 3 V_{cone} = 1/3 × 3.14 × 4 × 3 V_{cone} = 1/3 × 3.14 × 12 V_{cone} = 1/3 × 37.68 V_{cone} = 1/3 × 37.68/1 V_{cone} = (1 × 37.68)/(3 × 1) V_{cone} = 37.68/3 V_{cone} = 12.56 cm^{3} Example #2: Calculate the volume if r = 4 cm and h = 2 cm V_{cone} = 1/3 × 3.14 × 4^{2} × 2 V_{cone} = 1/3 × 3.14 × 16 × 2 V_{cone} = 1/3 × 3.14 × 32 V_{cone} = 1/3 × 100.48 V_{cone} = 1/3 × 100.48/1 V_{cone} = (1 × 100.48)/(3 × 1) V_{cone} = 100.48/3 V_{cone} = 33.49 cm^{3} Fun game: Break spheres by matching balls with the same color





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