Questions and answers by

Aaqib zaman

Questions (10)

The area, A cm3 , of a circle increases at a constant rate of 2 cm2 ´ s -1 . If theinitial area of A is 1 cm2 , show that the
1. 1 answer
2. 586 views
The volume, V cm3 , of a cone height h is(pi)(h^3)/ 12. If h increases at a constant rate of 0.2 cm/sec and the initial height
1. 1 answer
2. 922 views
The volume, V cm3 , of a cube at time t seconds is given byV=(4 + 1/3t)^3 find the rate at which its volume is increasing at the
1. 0 answers
2. 468 views
The amount of water,V cm3 , in a leaking tank at time t seconds is given byV = (15-t)^3 for 0<=t<=15 Find the rate at which the
1. 0 answers
2. 424 views
The radius, r cm , of a spherical balloon at a time t seconds is given byr = 3 + 2 / (1+t) What is the initial radius? Find the
1. 1 answer
2. 702 views
The length, l mm of an elastic string at time t seconds is given byl=t^3 / 3 - 4t +10 Find the instants (that is, the value of t
1. 1 answer
2. 466 views
The radius r (cm) of a circle at time t seconds is given by r = 9t - t^3 . At eachof the following instants, find the rate of
1. 0 answers
2. 532 views
A rectangle has sides of length x cm and 2x - 4cm and the length x cm at time tseconds is given by x = 2 + 3t, (t>=0) . Show
1. 0 answers
2. 440 views
The radius, r cm, of a circle at time t seconds is given by r = 2t 2 + 1. Express itsarea, A cm2 , in terms of t and find the
1. 1 answer
2. 991 views
Water is poured steadily into an empty container. If the volume of water in thecontainer after 5 seconds is 30 cm3 , find a) The
1. 2 answers
2. 672 views