The height of a cone is 15 cm. If its volume is 1570 cm3, find the radius of the base. (use π = 3.14)
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so radius of the cone is 10 cm
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volume of cone = 1/3×3.14×r^2h
1/3×3.14×r^2h = 1570
r^2 = (1570×3)÷(15×3.14)
r^2 = (157000×3)÷(15×314)
r^2 = 100
r = 10
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