Answer:
35.1 sq. feet.
Step-by-step explanation:
Here ABCD is a rectangle and AC is a diagonal. Hence, Δ ABC is a right triangle with AC = 9 feet and ∠ CAB = 30°.
So, from the right triangle Δ ABC,
⇒ BC = 9 sin 30° = 4.5 feet.
Again,
⇒ AB = 9 cos 30° = 7.794 feet.
Therefore, area of the rectangle is (AB × BC) = 4.5 × 7.794 = 35.1 sq. feet (Answer)
