Answer:
i can't see the picture can you writen and and I promise that I will solve it as quickly as possible
Step-by-step explanation:
Im a little confused here because there isn't enough information to go on or I might be reading it wrong.
Answer:
I believe its 63°......,.,..,.,.,.,
Lateral sides consiste of 4 congruentisosceles triangle
lateral area
= 4 * 0.5 * 11.2 * 20
= 448 cm^2