Part a)

The area of a circle is πr2.  Define r as 5, and then find the area of a circle.

Matlab:

r=5;

A=pi*(r^2)

 

A =

 

78.5398

Part b)

The surface area of a sphere is 4πr2. Find the surface area of a sphere with a radius of 10 ft

Matlab:

r=10;

A = (4*pi*(r^2))

 

A =

 

1.2566e+003

Part c)

The volume of a sphere is 4/3 πr3. Find the volume of a sphere with a radius of 2 ft

Matlab:

r = 2;

V = ((4/3)*pi*(r^3))

 

V =

 

33.5103

Part d)

The volume of a cylinder is πr2 h. Define r as 3 and h as the matrix

h = [1, 5, 12]

Find the volume of the cylinders

Matlab:

r = 3;

h = [1, 5, 12];

V = (pi*(r^2)*h)

 

V =

 

28.2743  141.3717  339.2920

Part e)

The area of a triangle is ½ bh, where b is the base and h is the height. Define the base as the matrix

b = [2, 4, 6]

and the height as 12, and find the area of the triangles

Matlab:

b = [2, 4, 6];

h = 12;

A = ((1/2)*b*h)

 

A =

 

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