Question
A semicircular sheet of metal of diameter 20cm is bent
into an open conical cup. the capacity of the cup is. Use π = 22/7Solution
Diameter = 20 R = 20/2= 10 m Capacity of cup = πr3 /8 √3 =22/7 ×10×10×10)/ 8 ×1.7 = 7000/56×1.7 cm3 =73.52cm3
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