A man donates 10 aluminum buckets to an orphanage. A bucket made of aluminum is of height 20 cm and has its upper
and lowest ends of radius 36 cm and 21 cm respectively. Find the cost of preparing 10 buckets if the cost of aluminum sheet is
42 per 100 cm2. Write your comments on the act of the man.
Bucket in the shape of frustum
Height = h = 20 cm
Radius = R = 36 cm
radius = r = 21 cm
Area covered with aluminum sheet for 10 buckets = CSA of a frustum of cone + area of the bottom
therefore the TSA of 10 buckets are =
cost of aluminum sheet for is
The total cost of the aluminium sheet is rupees 24621