Question

(xi
) 25 small metal cones of radius 6 cm each are made by melting a large right circular cone of radius
15 cm and of height 20 cm. Find the height of the small cones.​

Answer 1

Step-by-step explanation:

volume of cone

$\frac{1}{3} \pi \: \: r {}^{2} h \:$

$\frac{1}{3} \pi \: 36 \: \: h = \frac{1}{3} \pi \: 225 \times 20$

$12\pi \: \times h = 75\pi \: \times 20$

$h \: = \frac{75\pi \times 20}{12\pi}$

$h = 25 \times 5 \div 25$

125/25

h= 5 cm