Answer:
-40
Step-by-step explanation:
Just multiple the 2 numbers like usual than add the negative to your answer
The area available to the goat is 3/4 of a circle with 6 ft radius plus 2/4 of a circle with 3 ft radius.
A = (3/4)π*(6 ft)² + (1/2)π*(3 ft)²
= π*((3/4)*36 +(1/2)*9) ft²
= 31.5π ft² ≈ 98.96 ft²
The goat can roam over an area of about 99 ft².