Answer:
The length of the flight of stairs is 52 m
Step-by-step explanation:
In parallelograms, opposite sides are equal in length
In the given figure
∵ The building is built in the shape of a parallelogram
∵ The length of the flight of stairs is one side of it
→ We can find it by finding the hypotenuse of the right triangle
  whose legs are 47 m and 22 m
∴ The length of it = the length of the hypotenuse of the right Δ
→ By using the Pythagoras Theorem
∵ h = [tex]\sqrt{(leg1)^{2}+(leg2)^{2}}[/tex]
∵ leg1 = 47 and leg2 = 22 Â
∴ h = [tex]\sqrt{(47)^{2}+(22)^{2}}[/tex]
∴ h = [tex]\sqrt{2209+484}[/tex]
∴ h = [tex]\sqrt{2693}[/tex]
∴ h = 51.89412298
∵ h represents the length of the flight of stairs
∴ The length of the flight of stairs = 51.89412298 m
→ Round it to the nearest meter
∴ The length of the flight of stairs = 52 m
