Answer:
49°
Step-by-step explanation:
The given information that BC=DC tells you triangle BCD is an isosceles triangle and that angle y is one of the two equal base angles. Then ...
y + y + 82 = 180 . . . . . the sum of angle measures is 180 degrees
2y = 98 . . . . subtract 82
y = 49 . . . . . divide by 2
The measure of y is 49°.
4.741
4.742
Really, you could stick any digit from 1-9 at the end of 4.74 to create your answer.
Area = bh/2
(9.9 x 5.5)÷2 = 27.225 ft^2
