Answer:
12 inches by 21 inches
Step-by-step
Let's start with the 8 feet
for every 2 feet add three inches you get a total of 12 inches
same for the 14 feet, you get 21 inches
1.1a+3.5b
Step-by-step explanation:
(20,10) is gonna be in The first quadrant
C. 63 square inches