I have two problems in the pictures. I need a bit of help! Please and thank you!


Answer:
Answers are below.
Step-by-step explanation:
Problem 2:
Area = approx. 11.3 (rounded to nearest tenth)
A = 1 / 4b [tex]\sqrt{4a^{2} - b^{2} = }[/tex] 1/4 x 4 x [tex]\sqrt{4 *6^2 - 4^2}=[/tex] 11.31371
11.31371 rounded to the nearest tenth is 11.3
Problem 3: i'm not too sure sorry :(