There are 4 semicircles, each radius is 8cm, so we get the total areas of these semicircles: 4×0.5×

π
and the square area: 16²
so the total area of figure: 16²+4×0.5×

π=256+128π
I believe it’s -6 square root of 2 + 3 square root of 4 + 6 square root of 5
The answer is 40 inches. Reason is a^2 + b^2 = c^2. A is 42. B is unknown. C is 58. Taking that information it is 40 inches