Question

The dimensions of a cuboid are 44 cm, 21 cm, 12 cm. It is melted and a cone of
height 24 cm is made. Find the radius of its base,
of

Ans: solution;
cuboid. cone
l= 44cm. h=24cm
b= 21cm r= to find
h= 12cm

From given information

volume of cuboid = volume of cone
$l \times b \times h = \frac{1}{3}\pi \: r ^{2} h$
$44 \times 21 \times 12 = \frac{1}{3} \times \frac{22}{7 } \times r {}^{2} \times 24$
$21 = \frac{1}{21 } \times r {}^{2}$
$(21) {}^{2} = (r) ^{2}$
taking square root

$21 = r$
Ans: Radius of base of cone 21cm.








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Answer 1

Answer:

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