Question
Raghu wants to make a closed aluminium cone for his science project. The slant height and radius of the cone should be 10 cm and 7 cm respectively. The area of the aluminium sheet required to make the cone is_____.
(Use π=227)
(Use π=227)
Answer: Option D
:
D
Given,
Radius (r) = 7 cm
Slant height (l) = 10 cm
Area of the aluminium sheet required
=Total surfacearea ofthe cone
= πr(l+r)
= 227×7(10+7)
= 374 cm2
Hence, the area of the aluminium sheet required is 374 cm2.
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:
D
Given,
Radius (r) = 7 cm
Slant height (l) = 10 cm
Area of the aluminium sheet required
=Total surfacearea ofthe cone
= πr(l+r)
= 227×7(10+7)
= 374 cm2
Hence, the area of the aluminium sheet required is 374 cm2.
Was this answer helpful ?
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