Answer:
Area of Triangle: 180
Area of Semi-circle: 157
Total Area: 337
Step-by-step explanation:
Area of triangle: 1/2(l x w)
1/2[(20) x (18)] = 180
Area of a semi-circle: 1/2(pi)(radius)²
1/2(3.14)(10)²
1/2(3.14)(100)
1/2(314)
157
((DON'T FORGET THAT IT'S ASKING FOR RADIUS AND NOT THE DIAMETER))
Total: add both areas
180 + 157
337
