What size aperature would I need to find and see the supernova in M51?

On June 2, 2011, a new supernova was identified by an amateur French astronomer in M51.What size telescope aperture would one need to have any chance of seeing this? Given the right sized scope,... more

A rectangle is cut into pieces and rearranged to form a square. Find perimeter of square.

A rectangle with dimensions 9 inches and 16 inches is cut into pieces and rearranged to form a square. Find the perimeter of the square. Please help, thank you :)

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