Question
The ratio of the radii of the
bases of a cylinder and a cone is 7:8, while the ratio of their heights is 4:5. What is the ratio of the volume of the cylinder to the volume of the cone?Solution
ATQ,
Let r and R be the radii of the bases of the cylinder and the cone, respectively. r/R =7/8 Let h and H be the heights of the cylinder and the cone, respectively. h/H =4/5 The formula for volume ratio: 
Substituting values: 
Hence, the ratio of the volumes is 147:80.
If the firms under perfect competition have different costs, abnormal profits can be earned in the long run only by
In case of Giffens goods, price effect is
From the resource allocation point of view, perfect competition is preferable becauseÂ
Shifts in demand curve as shown in the figure below represents
A movement along a demand curve indicates that a different quantity is being demanded
This movement is due to
When the economist speaks of an increase in demand, he is usually referring to a ____________________
Elasticity of demand measures the
Pricing decision includes
Which one of the following is not the function of a managerial economist?
Elasticity of demand is based on which of the following factors?
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