the height and the slant height of a cone are 21 centimetre and 28 centimetre respectively. find the volume of the cone.
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Height , h = 21 cm
slant height , l = 28 cm
radius = r
l ² = h² + r²
r² = l ² - h²
= 28 ² - 21 ²
r² = 343
r = √ 343
r = 18.52 (approx.)
Volume of a cone = 1/3πr²h
= 1/3 × 22 / 7 × 18.52 × 18.52 ×21
= 7545.7888 cm³
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slant height , l = 28 cm
radius = r
l ² = h² + r²
r² = l ² - h²
= 28 ² - 21 ²
r² = 343
r = √ 343
r = 18.52 (approx.)
Volume of a cone = 1/3πr²h
= 1/3 × 22 / 7 × 18.52 × 18.52 ×21
= 7545.7888 cm³
I think this will help u
MARK AS BRAINLIST
Obaidnasim:
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not u
ravi is correct
partialy
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