Question
Cylinder radius = 7 cm, height = 12 cm. It is melted
into cones of radius 3.5 cm, height 8 cm. Find number of cones.Solution
ATQ,
Vcylinder = ΟΓ7Β²Γ12 = 588Ο. Vcone = (1/3)ΟΓ3.5Β²Γ8 = (98/3)Ο. No. of cones = 588 / (98/3) = 18.
Product of two consecutive positive even numbers is 840. Find the sum of the digits of the two numbers.Β Β
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