Pythagorean theorem: word problems U5U An envelope is 15 inches wide, and it measures 25 inches along the diagonal. How tall is the envelope? inches Submit

Step 1 ：\( a^2 + b^2 = c^2 \)

Step 2 ：\( 15^2 + b^2 = 25^2 \)

Step 3 ：\( b^2 = 25^2 - 15^2 \)

Step 4 ：\( b^2 = 400 \)

Step 5 ：\( b = \sqrt{400} \)

Step 6 ：\( b = 20 \)