The perimeter of one square is 48 cm and that of another is 28 cm. Find the perimeter and the diagonal of a square which is equal in area to these two combined?  Pick one.
A) 13√4 B) 13√2 C) 23√2 D) 13.9√2 E) 13√9
4a = 48 4a = 28   a = 12 a = 7   a2 = 144 a2 = 49   Combined area = a2 = 193 =&gt; a = 13.9   d = 13.9√2   Answer: 13.9√2
<result>D</result>
The perimeter of one square is 48 cm and that of another is 28 cm. Find the perimeter and the diagonal of a square which is equal in area to these two combined?