The total surface area of a right circular cylinder is 165π m square .If the radius of its base is 5 cm . Find its height and volume.
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Step-by-step explanation:
T. S. A of cone = πr(l+r)
165 π = π * 5 ( l+ 5)
165 = 5L + 5
165-5 = 5L
160 = 5L
160/5 = L ( slant h )
l= 32 cm.
h = √l²-r²
h = √32² - 5²
h = √ 1025 - 25
h = √ 999
h = 31.60 = 32 cm
Volume of cone = 1/3 πr²h
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