A unit circle is made up of n wedges equivalent to the inner wedge in the figure. The base of the inner triangle is 1 unit and its height is sin ( π n ) . The base of the outer triangle is B = cos ( π n ) + sin ( π n ) tan ( π n ) and the height is H = B sin ( 2 π n ) . Use this information to argue that the area of a unit circle is equal to π .
A unit circle is made up of n wedges equivalent to the inner wedge in the figure. The base of the inner triangle is 1 unit and its height is sin ( π n ) . The base of the outer triangle is B = cos ( π n ) + sin ( π n ) tan ( π n ) and the height is H = B sin ( 2 π n ) . Use this information to argue that the area of a unit circle is equal to π .
A unit circle is made up of n wedges equivalent to the inner wedge in the figure. The base of the inner triangle is 1 unit and its height is
sin
(
π
n
)
. The base of the outer triangle is
B
=
cos
(
π
n
)
+
sin
(
π
n
)
tan
(
π
n
)
and the height is
H
=
B
sin
(
2
π
n
)
. Use this information to argue that the area of a unit circle is equal to
π
.
=
Q6 What will be the allowable bearing capacity of sand having p = 37° and ydry
19 kN/m³ for (i) 1.5 m strip foundation (ii) 1.5 m x 1.5 m square footing and
(iii)1.5m x 2m rectangular footing. The footings are placed at a depth of 1.5 m
below ground level. Assume F, = 2.5. Use Terzaghi's equations.
0
Ne
Na
Ny
35 57.8 41.4 42.4
40 95.7 81.3 100.4
Q1 The SPT records versus depth are given in table below. Find qan for the raft 12%
foundation with BxB-10x10m and depth of raft D-2m, the allowable
settlement is 50mm.
Elevation, m 0.5 2
2 6.5 9.5 13 18 25
No.of blows, N 11 15 29 32 30 44
0
estigate shear
12%
University Calculus: Early Transcendentals (4th Edition)
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