Mathematics Magazine for Grades 1-12  

 

Calculate the Surface Area and Volume of Cones, Spheres and Cylinders (grade7)
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pi = 3.141592

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Surface Area of a Cylinder = 2 pi r 2 + s r h

(h is the height of the cylinder, r is the radius of the top)

Volume of a cylinder  = b h = pi r 2 h

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Surface Area of a Sphere = 4 pi r 2

Volume of a sphere = (4/3) pi r 3

(r is radius of circle)

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Volume of a cone = (1/3) b h = 1/3 pi r 2 h

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Circumference of Circle = 2 pi r

Area of Circle:
    area = pi  r2

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Round to decimal points.

Circle
Radius:

Sphere
Radius:

Cylinder
Radius of base: height:

Cone
Radius of base: height: