4/7 is the answer.
I cant reall explain becuase it will take forever xD
Answer:
The length of the hypotenuse is 
Step-by-step explanation:
we know that
In a right triangle
Applying the Pythagoras Theorem

where
c is the hypotenuse
a,b are the legs of the right triangle
substitute the values




Simplify

Answer:
200 x 100 = 2000, he might not
Step-by-step explanation:
Answer:
x^2 + y^2 = 100
Step-by-step explanation:
The general form of the equation of a circle is
(x-h)^2+(y-k)^2 = r^2
where (h,k) is the center and r is the radius
(x-0)^2+ (y-0)^2 = 10^2
x^2 + y^2 = 100