# A joker cap is in the form of a right circular cone of base radius 7cm and height 27 cm.find the area of the sheet required to make 10 such caps

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by neha201

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by neha201

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πrl

l²=r²+h²

=7²+27²

=49+729

=778

l=28(approx)

πrl

=3.14×7×28

=615.4

Area of sheet required to make 10 such caps

=615.4×10

=6154(approximately)

l=√7²+27²

l=√49+729

l=√778

C.S.A=πrl

C.S.A=(22/7)×7×√778

C.S.A=613.63

AREA OF SHEET REQUIRED TO MAKE 10 CAPS=613.63×10

AREA OF SHEET REQUIRED TO MAKE 10 CAPS=6136.3cm² (its accurate)