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The figure below is a model representing a rocket capsule. The model whose total height is 15cm is made up of a conical top

      

The figure below is a model representing a rocket capsule. The model whose total height is 15cm is
made up of a conical top; a hemispherical bottom and the middle part is cylindrical. The radius of the
base of the cone and that of the hemisphere are each 3cm. The height of the cylindrical part is 8cm.

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a) Calculate the external surface area of the model.

b) The actual rocket has a total height of 6 metres. The outside of the actual rocket capsule is to be
painted. Calculate the amount of paint required if an area of 20m2 requires 0.75 litres of the paint.

  

Answers


Wilfred
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Wilfykil answered the question on August 28, 2019 at 07:15


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