I assume you mean, that an angle and two sides are known.
A formula that can be used for irregular triangles is the cosine rule.

'b' and 'c' must be sides that are beside the angle 'A' (angle opposite 'a').
Answer:
Step-by-step explanation:
22/7x7^2=154
22/7x3^2=28(approx)
154-28=126
$26,000 because 25,000 × 0.06 = 1,500.
1,500 + 25,000 + 26,000