Question

Find the volume of the right circular cone with
(1) radius 6 cm, height 7 cm
(ii) radius 3.5 cm, height 12 cm​

Answer 1

Answer:

Step-by-step explanation:

1. r=6,h=7

v=$\pi$r²h/3

=22/7×36×7/3

=22×12

=264

2.r=3.5,h=12

v=$\pi$r²h

=22/7x12.25x12/3

=22x1.75x4

=154

Answer 2

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1)

${\large{\blue{\bold{\underline{Given:-}}}}}$

▪︎ Radius (r) = 6cm.

▪︎ Height (h) = 7cm.

${\large{\blue{\bold{\underline{Formula\:Used:-}}}}}$

▪︎ Volume of cone,

$= \frac{1}{3}\pi \: r {}^{2} h \\ \\ = \frac{1}{3} \times \frac{22}{7} \times {(6cm)}^{2} \times 7cm \\ \\ = (\frac{1}{1} \times \frac{22}{7} \times 2 \times 6\times 7) {cm}^{3} \\ \\ = 44\: cm {}^{3}$

2)

${\large{\blue{\bold{\underline{Given:-}}}}}$

▪︎ Radius = 3.5cm

▪︎ Height = 12cm.

▪︎ Volume of cone,

$= \frac{1}{3}\pi \: r {}^{2} h \\ \\ = \frac{1}{3} \times \frac{22}{7} \times {(3.5cm)}^{2} \times 12cm \\ \\ = (\frac{1}{1} \times \frac{22}{1} \times 0.5 \times 3.5\times 4) {cm}^{3} \\ \\ = 154\: cm {}^{3}$

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