30 circular plates,each of radius 14 cm and thickness are placed one above the other to form a solid. Find the total surface area of the solid formed
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Answer:
Height of the cylinder formed = 3 × 30 = 90 cm
radius = 14 cm
Total Surface Area = 2πrh + 2πr²
= 2π × 14 × 90 + 2π × (14)²
= 7920 + 1232 = 9152 cm²
Volume = πr²h = π × (14)² × 90
= 55440 cm³
Step-by-step explanation:
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