The backers are creating an outdoor pergola for their backyard. the pergola has an area of 648 square feet. the width of the pergola is 8/9 it’s lenght. what is the length of the pergola?

Step-by-step explanation:

Assume the pergola is rectangular.

648 sqft = L ft × W ft

W = 8L/9

648 = L×8L/9

648×9/8 = L^2

L = √(648×9/8) = 27

W = 8×27/9 = 24

W×L= 24×27 = 648✓

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m