Raghu wants to make a closed aluminium cone for his science project. The slant height and radius of the cone are $10$ cm and $7$ cm respectively. The area of aluminium sheet required to make the cone is
(Use $π = 3.14$ )

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Solution

The correct option is D

Given $r = 7$ m, $l = 10$ m

Area of the aluminium cone = Total surface area $= π r (l + r)$

$= \frac{22}{7} \times 7 (10 + 7)$

$= 374 {c m}^{2}$

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Raghu wants to make a closed aluminium cone for his science project. The slant height and radius of the cone are 10 cm and 7 cm respectively. The area of aluminium sheet required to make the cone is(Use $π = 3.14$

Find the area of metal sheet required in making a closed hollow cone of base radius 7 cm and height 24 cm.

Q. The radius and slant height of a cone are

7 c m

and

10 c m

respectively. Find its curved surface area.

(π = \frac{22}{7})

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Raghu wants to make a closed aluminium cone for his science project. The slant height and radius of the cone are 10 cm and 7 cm respectively. The area of aluminium sheet required to make the cone is (Use π=3.14)

The correct option is D Given r=7 m, l=10 m Area of the aluminium cone = Total surface area =πr(l+r) =227×7(10+7) =374 cm2

Raghu wants to make a closed aluminium cone for his science project. The slant height and radius of the cone are $10$ cm and $7$ cm respectively. The area of aluminium sheet required to make the cone is
(Use $π = 3.14$ )

The correct option is D

Given $r = 7$ m, $l = 10$ m

Area of the aluminium cone = Total surface area $= π r (l + r)$

$= \frac{22}{7} \times 7 (10 + 7)$

$= 374 {c m}^{2}$