In figure 7.11. a toy made from a
hemisphere. a cylinder and a cone
is shown. Find the total area of the
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Answer:
total area of toy = csa of cylinder+ csa of hemisphere + curved surface area of cone
=> 2πr^2+ πrl + 2π rh
=> 2×3.14×3×3+3.14×3×4+2×3.14×3×40
=>18.84+37.68+553.6
=>610.12 cm^2 ans
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