Question

This is a cross section of the design of a bookshelf.

Which is the closest to the length,in inches,of the brace indicated by BC in the sketch?​

Answer 1

25 in

Explanation:

`a^(2) +b^(2) =c^(2) \\15^(2) +20^(2) =c^(2) \\225+400=c^(2) \\c^(2) =625\\c=√(625) \\c=25`