2. (i) A toy is in the form of a cone mounted on a hemisphere of diameter 7
the radius of the
CBSE 2012
cm. The total height of the toy is 14.5 cm. Find the total surface area of the
toy
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Step-by-step explanation:
Total surface area of a cone = πrl + πr²
= (22/7 × 7 × 14.5) + (22/7 × 7²)
= 319 + 154
= 563 cm² ans.
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