One side of a square is 9 12 in long Find the length of its

One side of a square is 9 1/2 in. long. Find the length of its diagonal.

Give the exact answer. IN INCHES

Give the answer as an approximation to two decimal places. IN INCHES

Area of square = 9.5 inch

let the side be x inch

Area = x^2

x^2 = 9.5 ; x= sqrt(9.5) = 3.08 inch

Diagonal ; sqrt2*x = sqrt2*3.08 = 4.36 inch