The perimeter of an isosceles right triangle is 10 + 10 sq rt 2. What is the length of the hypotenuse of the triangle?	Choose the correct choice.
A) 5  B) 6  C) 7.07  D) 8  E) 9
side of triangle is a then perimeter = a+ a +a.sqrt2 ( right angle and pythagorus) =2a +a .sqrt 2 =10 + 10 Sqrt2 or,   a. ( 2+ sqrt2) = 10(1 + sqrt2), a= 10*(1+sqrt2)/2+sqrt2 =10*2.414/3.414 =0.707*10= 
<gadget id="calculator">0.707*10</gadget>
<output>7.07</output>
7.07   7.07
<result>C</result>
The perimeter of an isosceles right triangle is 10 + 10 sq rt 2. What is the length of the hypotenuse of the triangle?