If a^2 + b^2 = 64 and ab = 18 , then a + b = __________
10201
100
82
40
If (a+b)2=64 and ab=12. What is the value of (a−b)2?
In the given figure chord AB extended meets tangent DC at C. If AB = 7cm and BC =9 cm and area of △CBD=18cm2,
then area of △CAD= ______