A joker's cap is in form a right circular cone of base radius 7 cm and height 24 cm. find the area of the sheet required to make 10 such caps.
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Answer:
5500cm
Step-by-step explanation:
radius = 7cm
height = 24 cm
so, area required for 10 such caps
CSA of cone = πrl of 1 cap
using Pythagoras theorem
so , l² = r² + h²
l² = 7² + 24²
l² = 49 + 576
l² = 625
l = 25
CSA of 1 cap = πrl
22/7 *7*25
22*25
550cm= CSA of 1 cap
Area of 10 caps = 10* area of 1 cap
10 * 550
5500cm
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