A cone of height 9cm has a volume of ncm cube and a curved surface area of of ncm square. Find the vertical angle of the cone.
SOLUTION
The volume of a frustum of a cone of height h is given by the V= 1/3*pi*h (R^2 +Rr +r^2), Where R and r are the radii of its circular ends. Hollow metal hemispheres of internal and external diameters 12.5cm and 17.5cm, respectively, are to be cast from the molten contents of a ladle in the shape of a frustum of a cone of depth 1.2 metres and radii of ends 0.6m and 0.675m. Calculate the number of hemispheres that can be cast. Solution To solve any problem in mathematics you have to read and understand the problem you are to solve, especially word problem related questions. Failure to carefully read the question might lead to wrong interpretation of the problem and the result of it will be wrong solution to the problem. All problems on this platform have been carefully solved and prepared. If you are a student looking for solutions to your assignments then you are at the right place. If you are an upcoming teacher looking for solution to a challenging question then you are als...
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