if 3 square + 4 square is equals to 5 square then why four square + 5 square is not equals to 6 square​

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

Measures of the angle of r, 31 s (x+4) t (3x+9)

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.