a cylindrical vessel open at the top is a base of radius 10.5 cm and height 14 cm find the cost of painting the inner part of the weather at the rate of 10 per square metre50 circular plates each of radius 7 cm and thickness 1.2 CM are placed one above the other for a solid cylinder find the volume of the cylinder so formed
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Hey mate mark it as brainliest
Step-by-step explanation:
radius = 10.5 cm
height = 14 cm
inner total area = inner curved surface area + base area
= 2πrh + πr²
= 2×(22/7)×14×10.5 + (22/7)×10.5²
= 1270.5 cm²
rate = ₹10 per cm²
cost = 1270.5×10 = ₹12705
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