SOLUTION: The top and bottom diameters of a bucket are 20cm and 16cm respectively. If the bucket is 40cm deep, calculate its surface area.
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Question 1179276: The top and bottom diameters of a bucket are 20cm and 16cm respectively. If the bucket is 40cm deep, calculate its surface area. Answer by mananth(16946) (Show Source):
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Total surface area of a conical frustum:
A = π * [ r1^2 + r2^2 + (r1 + r2) * √((r1 - r2)2 + h^2) ]
r1=20 cm
r2=16 cm
h= 40 cm
pi = 3.142
A=3.14*(20^2+16^2+ (20+16)*sqrt(20-16)^2+40^2
A= 3.142*(656 +36*sqrt(16 +40^2)
=6608 cm^2
