Question

I need help answering these two questions

Answer 1

Explanation:

1. Area=3b*b=300 inches^2

3b^2=300

:3 :3

b^2=100

b=V100inches ^2

b=10 inches

2. Area=4b*3b

so 12b^2=4800

:12 :12

b^2=400

b=V400

b=20 inches