Question

the diagonal of a rectangular board is 1 m and its length is 96 cm find the area of the bold

Answer 1

Length = 96cm
Diagonal of rectangle = under root L²+B²
1 = under root (96)²+(b)²
1 = under root 9216+(b)²
1 = 96+b
b = -95cm
Area of rectangle = L×B = 96×-95 = -9120cm²

But the isn't in negative form..