PROBLEM # 2
Point A (5,0) is rotated 90 degrees counter-clock wise about point B (1,1). What are its new coordinates.

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Problems from 04/12/12

PROBLEM #1
A swimming pool is 8 m long, 6 m wide and 1.5 m deep. The water resistant paint needed for the pool costs $6 per square meter. How much will it cost to paint the interior surfaces of the pool?

SOLUTION 1
$540 (including bottom).

PROBLEM #2
For a party, you made 10 conical hats out of cardboard. How much cardboard did you use in total if each cap has a radius of 15 cm and a slant height of 25 cm?

SOLUTION 2
3750 pi  sq. cm. 

Congratulations to Abhimanyu Bhargava, Aseem Chandawarkar, Jaydeep Sambangi, Kishore Balsara, N. Alamelu, Narayan Sharma, Shailesh Goregaokar, Suhas Joglekar, Viboosh Chandrasekar and Vijay Aivalli, who were the winner of the last set of puzzles.