A jokers cap is in the form of a right-circular cone whose base radius is 7cm and height is 24cm the area of the sheet required to make 10 such caps is
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base radius of cone(r) = 7cm
height of cone (h)= 24c.m
slant height of cone ( l ) = √(h²+r²)
slant height = √(24²+7²) =25cm
we have a formula
curved surface area of the cone= π × r×l
area= 3.14×7×25=549.5cm²
now for 10 such cones = 10× 549.5=5495cm²
area of sheet required=5495cm²
height of cone (h)= 24c.m
slant height of cone ( l ) = √(h²+r²)
slant height = √(24²+7²) =25cm
we have a formula
curved surface area of the cone= π × r×l
area= 3.14×7×25=549.5cm²
now for 10 such cones = 10× 549.5=5495cm²
area of sheet required=5495cm²
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