find the radius of base of a cone whose curved surface area is 1884.4 square meter and it's slant height is 12 cm.
Answer is approx 5 cm
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- Question⇒ find the radius of base of a cone whose curved surface area is 1884.4 square meter and it's slant height is 12 cm.
Step-by-step explanation:
- given the slant height of the cone is 12cm =
- CSA of the cone = 1884.4m² = 18844000cm²
- we know the formula for the CSA of the cone, that is πrl where r is the radius of the base of the cone and l is the slant height of the cone.
- therefore πrl = 18844000cm²
- >> 22/7 × r × 12 = 18844000m²
- >> 12 × r = 18844000/1 × 7/22
- >> 12 × r = 5995818.18
- >> r = 5995818.18/12
- >> r = 499651.515 cm
- hence, the radius of the cylinder is 499651.515 cm.
- Answer is approx 5 cm
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