6 A cylindrical tank has a capacity of 7,986 cm. If its depth is 21 cm, find its diameter.
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cσrrєcτ qυєsτiσท
A cylindrical tank has a capacity of 7,986 cm³. If its depth is 21 cm
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Find the diameter of cylindrical tank
sσℓυτiσท
- Volume of tank = 7986 cm³
- Height of tank = 21cm
- Diameter = ?
Volume of cylinder = 7986 cm³
→ πr²h = 7986
→ 22/7 × r² × 21 = 7986
→ 22 × r² × 3 = 7986
→ 66r² = 7986
→ r² = 7986/66
→ r² = 121
→ r = √121 = 11 cm
Hence, the radius is 11 cm and its diameter is 22cm
α∂∂iτiσทαℓ iทfσrмατiσท
- Diameter = 2*radius
- CSA of cylinder = 2πrh
- TSA of cylinder = 2πrh + 2πr²
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