The entry terrace has an area of blank sq ft. the total area of the tree house is blank sq ft.

since the figure has a shape of a trap-ezium, we use the formula, for calculating the area of a trap-ezium to find its area. this formula is given by;

where and are length of the opposite parallel sides and h is the vertical height.

this gives us

square feet

actually your concept is wrong

step-by-step explanation:

150% of x =300

150x=300×100

x=(300×100)÷150

x=200