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Question 124

Work out the surface area of the following shape.


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Solution

In the given figure, there is a cube of side 5 cm and a cylinder of height 20 cm and radius is 2 cm
So, total surface area = Surface area of the cube + Curved surface area of cylinder
=6(5)2+2π(2)×20
=150+80π [surface area of cube=6a2surface area of cylinder=2πrh]
=150+80π
Total surface area =150+251.2=401.2 cm2


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