A man donates 10 aluminum buckets to an orphanage. A bucket made of al

1.	A man donates 10 aluminum buckets to an orphanage. A bucket made of aluminum isof height 20 cm and has its upper and lowest ends of radius 36 cm and 21 cmrespectively. Find the cost of preparing 10 buckets if the cost of aluminum sheet is42 per l 00 cm2. Write your comments on the act of the man.
Answer» Answer: Rs 4950 Step-by-step explanation: Find the surface area of 1 bucket: Surface Area = π(R - r)√[(R - r)² + h²] Surface Area = π(36 - 21)√[(36 - 21)² + 20²] Surface Area = 375π cm² Find the surface area of 10 buckets: 1 bucket = 375π cm² 10 buckets = 375π x 10 = 3750π cm² Find the cost: 100 cm² = Rs 42 3750π cm² = 42/100 x 3750π = Rs 4950 Answer: The cost is Rs 4950 hit like if you find it useful

A man donates 10 aluminum buckets to an orphanage. A bucket made of aluminum isof height 20 cm and has its upper and lowest ends of radius 36 cm and 21 cmrespectively. Find the cost of preparing 10 buckets if the cost of aluminum sheet is42 per l 00 cm2. Write your comments on the act of the man.

Answer»

Answer:

Rs 4950

Step-by-step explanation:

Find the surface area of 1 bucket:

Surface Area = π(R - r)√[(R - r)² + h²]

Surface Area = π(36 - 21)√[(36 - 21)² + 20²]

Surface Area = 375π cm²

Find the surface area of 10 buckets:

1 bucket = 375π cm²

10 buckets = 375π x 10 = 3750π cm²

Find the cost:

100 cm² = Rs 42

3750π cm² = 42/100 x 3750π = Rs 4950

Answer: The cost is Rs 4950

hit like if you find it useful