Question
In a city, the number of persons travelling by bike is
92.5% the number of persons travelling by metro. The number of persons travelling on foot is 75% the number of persons travelling by bike. If 800 persons travel by metro, then how many persons travel on foot?Solution
Number of persons travelling by bike = 800 × (92.5/100) = 740 Number of persons travelling by walk = 740 × (75/100) = 555
A frustum of a cone has a lower base radius of 5 cm, an upper base radius of 3 cm, and a height of 4 cm. What is the volume of the frustum?
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The conjugate of z = 2 − 5i is:
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In a triangle ABC, the sides are AB = 15 cm, BC = 20 cm, and AC = 25 cm. Find the area of the triangle using Heron’s formula.
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