The answer will be -28. Hope it helps
3 = 142 degrees
................................
279.68
Parentheses first : 4.37 ( 64)
Lastly multiply : 279.68
Formula
1/2 (b×h)
plug in
1/2 (6×3)
1/2 (18)
9 ft squared.
always remember measurement of the shape, square your answer because your finding area and formulas. the numbers on the side are to distract you.