the curved surface area of a right circular cone is 12320cm square if the radius of its base is 56cm,find its height
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given
π = 3.14159…
r = radius of the base = 56 cm
l = slant height = to be determined
h = height = √(l² - r²) = to be determined
SA = πr² + πrl
CSA = πrl = 12,320 cm²
πrl = 12,320 cm²
l = 12,320 cm² / πr = 12,320 cm² / 56π
l = 70.028 cm ≈ 70 cm
h = √(l² - r²) = √(70² - 56²) = √(4900 - 3,136) = √1,764
h = 42 cm HEIGHT
:)hope this ans helped u...
π = 3.14159…
r = radius of the base = 56 cm
l = slant height = to be determined
h = height = √(l² - r²) = to be determined
SA = πr² + πrl
CSA = πrl = 12,320 cm²
πrl = 12,320 cm²
l = 12,320 cm² / πr = 12,320 cm² / 56π
l = 70.028 cm ≈ 70 cm
h = √(l² - r²) = √(70² - 56²) = √(4900 - 3,136) = √1,764
h = 42 cm HEIGHT
:)hope this ans helped u...
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