A toy is in the form of a cone of radius 3.5 cm mounted on a hemisphere of same
radius. The total height of the toy is 15.5 cm. Find the total surface area of the toy.
(Take pi =22/7)
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Answer:
TSA of the toy = CSA of the cone + TSA of the hemisphere
CSA of the cone = πrl
22/7[3.5][15.5]
170.5 cm²
Area of the hemisphere = 4πr² - πr²
[4*22/7*3.5*3.5] - [ 22/7*3.5*3.5]
154 cm² - 38.5 cm²
115.5 cm²
TSA = 115.5 cm² + 170.5 cm²
286 cm²
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