Answer: length of the other side of his garden round to the nearest 20 of a foot =25ft
Explanation:
The diagonal divides the rectangle into two equal triangles
From the diagram drawn in the picture attached, a triangle is formed with
hypotenuse = 33ft (length of diagonal)
Opposite side = 22ft( length of one side)
Adjacent side = xft(length of the other side)
From Pythagoras theorem
Hypotenuse ^2 = opposite^2 + adjacent^2
33^2 = 22^2 +x^2
33^2 -22^2 = x^2
x^2= 1089-484 =605
x = √605= 24.597
This is approximately 25ft rounded up to the nearest 20 of a foot